Thomas, this is Jon. Let me address your second question. On the marketing strategy for core Momo, actually we are looking to keep the same level of channel investment for the payment -- for the marketing channels, same dollar amount, similar dollar amount for -- from last year. However, as Wang Yu said, this year some of our new apps are getting tractions. And with that we do like to keep the flexibility to invest more to grow the users and revenues for those new initiatives. But, however, we are focusing on the revenue growth on those new apps. So I guess we are probably looking to increase the marketing resources available for those new initiatives. We're looking at probably around 1 to 2 percentage of total revenue for core Momo. So -- but, however, we're only to make adjustments on this level where the spending plan on as we go basis, because a lot of it really depending on the performance of ROI. So that's the moving piece. For Tantan, as Wang Yu just mentioned, Tantan's team is the top priority on user growth. So we're going to spend -- how much they're going to spend? We're going to really -- it will really depend on the pace and magnitude of the improvement of its marketing efficiencies and product rollout. So if we move faster, we will spend more. But however, the VAS revenue will grow up more. And if we need more time, we'll spend less and the VAS revenue will ramp up a bit slower. So, instead of managing the line by line target, we are more focusing on targeting a range of bottom line. At this stage, we are looking at further narrowing down the adjusted net loss for 2021 down by RMB150 million to RMB200 million from last year's level. So, that's on the Tantan side. In terms of margin trends, on top of the additional potentials ending from core Momo, on the gross margin side, as I mentioned during the prepared remarks, due to the newly launched incentive program for new broadcasters, we do expect [technical difficulty] margin impact on the gross profit -- gross margin side. And that's for starting from Q1. You can apply that throughout the year. And, however, there are other factors probably will impact the margin on a quarterly basis such as the revenue mix might have some impact. But, however, we don't expect a [technical difficulty] will be significant. So, overall, the gross margin will see a 2% to 3% downtick for the year and also the potential -- higher selling marketing expenses from core Momo. Thank you.