Thanks. So let me briefly review Tantan's operational and business performance in the past [ph] quarter. First, on user growth. Whole paying users for Tantan, for the fourth quarter of 2019 was CNY 4.5 million, flat over last quarter. The flattish trend in the number of paying users was mainly caused by 2 reasons. First, after the fast resurgence, after being reinstated on app markets, user recovery has been a bit slower than expected due to an issue that we found on 16th November. Second, in mid-September, iOS rolled out a new subscription management policy, which caused the churn to go up meaningfully in paying users. The impact of the second factor came in slightly higher than our original expectations. By the end of 2019, 60% of the users had completed iOS 13 upgrade. We expect this factor to play a less important role in the first quarter of 2020 and the churn rate should go down to a normal level as we exit Q1. Regarding the first sector, we also made some progress in Q1, which we're going to elaborate a bit later. Now briefly on revenues. Total revenue for the fourth quarter was RMB 369.8 million, up 66% year-over-year and 19% from the previous quarter. The gradual rollout of the flash chat experience starting from mid-November has caused the ARPPU to increase on a sequential basis, which contributed to the growth in Q4. On sequential basis, there was also an element of deferred revenue impact which caused revenue to grow a bit fast in Q4 than [indiscernible] did on a Q-on-Q basis. Next, I'm going to briefly review what we've done and our future plans against our strategic priorities. Our top priority is to expand the size of the Tantan communities through products, innovations and marketing efforts. During Q4, one of the biggest focuses was to identify the cost of the slower-than-expected user recovery and find the solution as soon as possible. By mid-November, we have been able to pin down the cause of the problem. It was primarily due to the Titan content reviewing policy and anti-spam measures, which caused us to overshoot and ended up limiting the activities of the good users who are mistakenly identified as spammers . The overshooting across the retention of the male users decreased in a meaningful way due to less number of matches in interaction than these male users could get. After the problem was identified, the team took immediate action to solve it. We introduced a series of optimizations to the product interface and algorithm, aiming at improving the female user experience and engagements, which would in turn enhance experience and odds of matching for male users. In addition to products and algorithm optimizations, in mid-November, we also gradually rolled out a brand-new experience called FlashChat. The feature also aims at driving the number of matches and conversations on Tantan. We have built monetization features into the FlashChat experience as such experience add significant value to the users, especially male users. By the end of December, FlashChat already been fully rolled out. The data has been trending well, both in terms of engagement and revenue contribution. The product and algorithm optimizations, together with a new feature launch, played an important role in improving user retention. By January, the retention ratio has already gone back to the pre-suspension period, laying a solid foundation for us to drive user growth in 2020. Now let me give some color on the latest user trends we are seeing against the backdrop with the COVID-19 outbreak. After we fixed the use experience issue, the active users and paying users numbers grew rapidly until mid-February, especially during the couple of weeks immediately following the Chinese New Year holiday. It shows that young people today have genuine demand for dating applications. However, after mid-February, we started to encounter downward pressure around user engagement trends. We highly suspect that a large part of it can be attributed to the virus effects because many of our users stay at home and significantly cut down their outdoor activities. It might have limited the urge to use Tantan to discover potential dates. We believe that pressure should gradually ease up and after activities normalize and the outdoor meet ups begin to pick up again. Although at this point, we don't know when that will happen, we believe firmly that dating sentiment amongst young people will eventually come back strongly after the shadow tested by the virus phase out and the life goes back to normal. As we look further down into the year 2020, user growth is still the most important objective for Tantan. In order to achieve that goal, we have 3 sub-objectives: First, as Tang Zong mentioned, we need to significantly increase the efficiency of our user acquisition efforts. We believe we still have a great deal of opportunities to improve on that front. Second, we need to continue to focus on enriching the product features and enhancing user experience of Tantan. Not being able to get quality matches and build meaningful conversation is a key reason for user churn to using Tantan. If we can get more and more effective in helping users discovering new relationships and build meaningful interactions on and off our platform, we'll be able to lower the churn and include the long-term retention on Tantan, which is a critical importance for user growth for the end products. Of course, this is not an easy task, but we are committed to working very hard and patiently to get there. Thirdly, we expect to continue to grow the average revenue per users so that we can invest more aggressively into user acquisition with a positive ROI in the satisfactory bottom line. These are the 3 components of our user growth plan for 2020. We are off to a not so easy start in Q1 due to the COVID-19 disruptions. However, that temporary difficulties doesn't change long-term vision or our strategic plan for the Tantan platform. Now a quick update on our second priority, which is to drive monetization through the optimization of existing feature -- premium features and the introduction of new paying experiences. In Q4, our main focus was on testing and tweaking the new non-subscription monetization feature. The new feature is not just for monetization, but the new use consumer experience can have an impact on the user experience and engagement as well. We have been making progress with testing and seeing gradual improvements in the different metrics that we are monitoring. The team has also had a -- had new learnings about how to make it work better within the dating ecosystem. For this new feature, Q1 is still largely about refining the products and operations, making sure that the key stats continue to improve to the point where we feel comfortable to release more traffic to it. Looking into 2020, the priorities on the monetization side will still revolve around 3 pillars. One is optimizing the existing monetization features to drive better adoption. The second pillar is introducing new premium features and services. Within the ladder, the biggest project is obviously the non-subscription feature that is currently under testing. Our goal for 2020 is for it to start generating meaningful revenues towards the back half of the year. In addition to that, we are also looking to experiment on other new monetization features on both subscription and non-subscription basis. The third pillar is our overseas development. In the past year, we have built up a sizable user base in some parts of Asia and reach possible ROI in many of the markets we are in. Our findings in these new markets prove our earlier belief that Tantan poses universal appeal to users outside of China. By 2020, our goal is to scale the revenues and profits in markets that we are already in and keep pushing into new markets that make sense in terms of ROI. With that, I'm now passing the call to Mr. Jonathan Zhang for financial review. Jon, please