Lina, this is Andy. Thank you for your question. Let me first address the question about the store opening pace. Obviously, we are very pleased that we have opened 505 stores in the fourth quarter. But I also want to remind folks that even though it's probably still higher than what we expected, but we have already told folks that because of the COVID impact, the store opening will be more back-end loaded. And so with a little bit easing in the cold situations in fall and winter past year, our development team have reaccelerated the pace and try to take advantage of that window and open as many stores as possible. And then we also try to push some of the store opening earlier in the fourth quarter, so in anticipation of the Chinese New Year holiday period. So as we mentioned, we expect to open 1,000 stores this year. And it's a very high pace, right? So if you think about our store right now, we have more than -- a little more than 10,000 stores, and that's almost like opening almost like 10% of new store. Now putting perspective for you, last year, we opened almost like 1 store every, I think, 8 hours, and so that's a very fast pace. So we'll do maintain a fast pace, but probably not at the level that we're seeing every quarter, 500-plus stores. I don't think that is sustainable at least in the near term. We do have plans, as we mentioned on the prepared remarks, to accelerate store network expansion, and we will put and allocate resources to do that. Now in terms of the possibilities of a new store, as Joey mentioned, is -- we have a disciplined approach to store opening. So if you look at the payback period for KFC, it's very strong, 2 to 3 years, and have been very consistent over the past few years. Now Pizza Hut, it's about like 3 to 5 years, and also with very strong returns. So we have a lot of incentive to open a store -- as many stores as possible, but within that framework of disciplined approach to store opening to make sure that we have the right financial returns. So hopefully -- and then one thing, as you can tell, obviously, with that kind of fast pace of store openings, it demonstrate our confidence in the market in China and also the potential opportunities here in China. So we always encourage investors to look at the overall system sales rather than sometimes too focused on the same-store sales growth because China is still a growth market.