Hello, and thank you for standing by for Tuniu's 2021 second quarter earnings conference call. At this time, all participants are in listen-only mode. After management's prepared remarks, there will be a question and answer session. Today's conference is being recorded. If you have any objections, you may disconnect at this time. I would now like to turn the meeting over to your host for today's conference call, Director of Investor Relations, Mary.
Thank you. Welcome to our 2021 second quarter earnings conference call. Joining me on the call today are Donald Yu, Tuniu's Founder, Chairman, and Chief Executive Officer, and Anqiang Chen, Tuniu's Financial Controller. For today's agenda, management will discuss business updates, operation highlights, and financial performance for the second quarter of 2021. Before we continue, I refer you to our safe harbor statement in earnings press release, which applies to this call as we will make forward-looking statements. Also, this call includes discussions of certain non-GAAP financial measures. Please refer to our earnings release, which contains a reconciliation of non-GAAP measures to the most directly comparable GAAP measures. Finally, please note that unless otherwise stated, all figures mentioned during this conference call are in RMB. I would now like to turn the call over to our Founder, Chairman, and Chief Executive Officer, Donald Yu.
Thank you, Mary. Good day, everyone. Welcome to our second quarter 2021 earnings conference call. The overall domestic tourism industry saw a clear trend towards full recovery in the second quarter. Year-on-year, our net revenues increased by 373%, with revenues from packaged tours up by over 900%. This is the first quarter in which we achieved positive growth since the COVID-19 outbreak last year. Benefiting from our strict cost control measures, operating expenses decreased by 14% year-over-year, and our quarterly loss was the lowest since the pandemic outbreak. In the second quarter, with the pandemic stabilized, the warm weather and holidays spurred the demand for travel. While last year, most people chose to take local tours during the public holidays, this year, the proportion of travelers taking inter-provincial tours has steadily increased.
Also, in line with the heightened demand for high-quality tour products, the proportion consumption of inter-provincial tours has increased compared with the same period last year. We continue to emphasize the development of our core packaged tour business, with special focus on demand destinations to continuously upgrade our products and level of service. This allows us to rapidly recover our business by seizing opportunities during industry upswings. Our core competitiveness and protective moat is our commitment to providing the high-quality products and services to our customers. Based on customer demand, Tuniu's travel routes are designed to satisfy and even exceed customer expectations. Our new tour product designers have more than five years of experience in production or at destinations. Our high-quality products are subject to strict internal procurement and production procedures. Tour guides for new tours must go through multiple interviews and training before they are officially on the job.
Our products also have been tested by our customers, ensuring that they meet their requirements before being launched. The satisfaction rate of our new products needs to reach 90% before they can be launched, and we are proud that satisfaction rate for our new tour products has reached 97%. We always strive to upgrade our products through product innovation, creating new destination selections and itineraries to bring fresh travel experiences to customers. In addition, we also focus on selected market segments and customers and launch themed tour products to attract target customer groups. While standard products remain popular with customers, we also see that demand for customized tours is increasing.
Due to considerations of travel safety and overall experience, more tourists are choosing to travel with their families and friends in the form of private tours or small group tours that may take as few as two people, providing the freedom of self-guided tours with the convenience and services of organized tours. Amidst China's stabilized pandemic situation and economic recovery, we are seeing an increase in demand for customized tours for business travel around conferences and team-building activities. As an experienced travel service provider with an extensive service network across China, Tuniu is able to offer business clients customized tour travel products with competitive prices and outstanding service. In the second quarter, our customized tours achieved record growth since the pandemic, with GMV increasing by more than 200% quarter-on-quarter. Good products require good service.
Our self-operated local tour operators play a crucial role in improving customer experience through excellent service. This year, we launched the Zero Complaints initiative for our local tour operators, with six of our local tour operators maintaining zero complaints records to date. We will continue to work hard to maintain and exceed these records. Through our efforts, we are pleased to report that in the second quarter, GMV of local tour operator products increased over 200% quarter-over-quarter, and the overall satisfaction rate of our local tour operator service reached 98%. Several unexpected events have occurred since the beginning of this year, including regional pandemic outbreaks and natural disasters. Our self-operated local tour operators have become our most powerful moat during this time. In response to emergency situations, our local tour operators have helped to ensure the safety of tourists' lives and their property.
That we always get some grateful feedback. While our local tour staff have faced many unexpected difficulties, they have successfully carried out their duty, receiving recognition and praise from our guests. By providing excellent products and service, we have built a large and loyal customer base. Tuniu holds a members' day every month, where we launch special products and discounts for our members. In the second quarter, members' day sales continuously reached new highs. In July, our members' day single-day sale exceeded RMB 40 million, with the transaction volume of package tour products increasing 5x over the same period last year. In terms of technology, we have been able to automate fixed workflows and further replace staff daily tasks with automated process flow, such as order processing and inventory management.
In order to liberate our employees and invest in more creative work, we have also strengthened internal information, data, and risk management, and conducted self-audits to ensure technical security and compliance. In July, China experienced several pandemic outbreaks, which may impact summer travel. We remain, however, optimistic about the domestic travel tourism market. Our industry has overcome many challenges since the COVID-19 outbreak last year, and we are confident that we will overcome any temporary difficulties. With ongoing vaccination rollout and the enhancement of personal protection measures, domestic tourism should continue to experience a strong recovery. We will continue to work hard and provide high-quality products and services to meet the demands of our customers. I will now turn the call over to Anqiang, our Financial Controller, for the financial highlights.
Thank you, Donald. Hello, everyone. Now, I walk you through our second quarter of 2021 financial results in greater detail. Please note that all the monetary amounts are in RMB, unless otherwise stated. You can find the U.S. dollar equivalents of the numbers in our earnings release. For the second quarter of 2021, net revenues were RMB 161 million, representing a year-over-year increase of 373% from the corresponding period in 2020. The increase was primarily due to the growth in revenues from package tours. Revenues from package tours were up 907% year-over-year to RMB 126.5 million, and accounted for 79% of our total net revenues for the quarter. The increase was primarily due to the growth in demand for domestic tours. Other revenues were up 61% year-over-year to RMB 34.5 million and accounted for 21% of our total net revenue.
The increase was primarily due to a rise in commission fees received from other related products and service fees received from insurance companies. Gross profit for the second quarter of 2021 was RMB 69 million, up 792% year-over-year. Operating expenses for the second quarter of 2021 were RMB 95.1 million, down 40% year-over-year. Excluding share-based compensation expenses and amortization of acquired intangible assets, non-GAAP operating expenses were RMB 89.6 million, representing a year-over-year decrease of 36%. Research and product development expenses for the second quarter of 2021 were RMB 13.8 million, down 33% year-over-year. The decrease was primarily due to the decrease in research and product development personnel-related expenses. Sales and marketing expenses for the second quarter of 2021 were RMB 44.8 million, down 47% year-over-year. The decrease was primarily due to the decrease in sales and marketing personnel-related expenses and amortization of acquired intangible assets.
General and administrative expenses for the second quarter of 2020 were RMB 41.5 million, down 32% year-over-year. The decrease was primarily due to the decrease in general and administrative personnel-related expenses. Net loss attributable to ordinary shareholders was RMB 13.1 million in the second quarter of 2021. Non-GAAP net loss attributable to ordinary shareholders, which included share-based compensation expenses and amortization of acquired intangible assets, was RMB 7.4 million in the second quarter of 2021. As of June 30th, 2021, the company had cash and cash equivalents, restricted cash, and short-term investments of RMB 1.1 billion. Cash flow generated from operations for the second quarter of 2021 was RMB 55.7 million. Capital expenditures for the second quarter of 2021 were RMB 2.9 million. For the third quarter of 2021, the company expects to generate RMB 111.2 million-RMB 123.5 million of net revenues, which represents 0%-10% decrease year-over-year.
Please note that the forecast reflects management's current and preliminary view on the industry and its operations, which is subject to change, particularly as to the uncertainties brought about by the impact of COVID-19. Thank you for listening. We are now ready for questions. Operator?
Thank you. If you would like to ask a question over the phone lines, please signal by pressing star one on your telephone keypad. If you are using a speakerphone, please make sure your mute function is disabled to allow your signal to reach our equipment. Once again, press star one to ask a question. In order to be fair to all callers who wish to ask questions, we will take one question at a time from each caller. If you have more than one question, please request to join the question queue again after your first question has been addressed. We'll pause for a moment to allow everyone an opportunity to signal for questions. We can now take the first question from Tina Bai who is a private investor. Please go ahead.
Thank you. This is Tina Bai speaking. I'm a Publisher, hi, management. Congratulations on the strong recovery of the second quarter. Would you please share with us your top destinations? My second question is regarding the recent coronavirus outbreak in several cities across China. How would this impact your performance in the third quarter? What is your view towards the future launch of development of the travel industry? Thank you.
Thank you for the question. In the second quarter, the external environment was very positive for the recovery of travel industry. In fact, we've reinforced the sales strength ever since the resumption of inter-provincial tours in last July. We've adopted the full lifecycle customer management method to gain and retain customers. Also, our tour advisors did more training such as on destination knowledge and customized services to enhance their service ability.
Apart from traditional online channels, we've also provided our sales staff with new channels such as Taike app, our social media, and live streaming shows. As a result, our revenues, especially the revenues from package tours, grew largely during the quarter. In terms of the package tour GMV, our best destination for the quarter was Hainan, one of the most popular travel destinations in China, followed by Shanghai and Guangdong, both of which have famous theme parks and are good for families with children. Then Jiangsu and Zhejiang were local tours prevail , and the trips were boosted by short holidays during the quarter. Other destinations included the popular sites in Sichuan, Yunnan, and Xinjiang. For the second question, yes, the recent COVID-19 outbreaks in several cities across China had a negative impact on the travel industry during the peak season.
In fact, the travel map shows rapid growth due to the summer vacation before the outbreak in late July. Our total GMV in July increased on both year-over-year and quarter-over-quarter basis. Considering the safety issue, some provinces have ceased the inter-provincial tours since late July. Therefore, we expect the net revenue for the third quarter to align with the same period last year or decrease up to 10% year-over-year. After the outbreak of the virus in July, our first priority to ensure the safety and the interest of our customers, helping them refund and reschedule their trips. We also upgraded our destination services, including assist customers with nucleic acid testing. Our employees, both in the headquarters and at destinations, work in shifts around the clock to help our customers with any emergencies and try to send them home earlier and safer.
For products, we launched the products without a fixed departure date, which means the customer may book the itinerary now, enjoying the current favorable price, and departing two or three months time when the external environment gets better or they have a vaccine. The customer only needs to make a second confirmation about the exact departure date in advance, then we arrange their trips accordingly. They can also cancel the order at any time with a full refund if they change their trip plan. The economical and flexible product is welcomed by all customers, especially the younger generation. In general, we are still positive about the industry, for the demand is always there. Despite the short-term recession during this January and February, we've experienced rapid rebound since March. With the pandemic being under control, the market will get better and better. Thank you.
Once again, if you would like to ask a question, please press star one on your telephone keypad now. It appears at this time there are no further questions. I'd like to now turn the call back over to Mary Chen for any additional or closing remarks.
Once again, thank you for joining us today. Please don't hesitate to contact us if you have any further questions. Thank you for your continued support, and we look forward to speaking with you in the coming months.
Thank you for your participation in today's conference. This concludes the presentation. You may now disconnect.