Okay, well, Sara, thank you for your questions, as always, very powerful questions. I will just make a couple of quick comments and then I will hand over to both Ted and Joey for further clarifications. On the VAT side and the question of reinvestment, I believe we're very satisfied with the level of reinvestment we made into our plans. I believe we're well positioned in value. We don't want to drive empty transactions for the sake of it, I mean we can always do that by launching products at RMB10, but that just creates confusion, it doesn't get any real value, customers are not satisfied, you get -- that is easy to do but we have resisted doing that. As Ted mentioned, I covered in my presentation, spent a lot on store refurbishment, that cost us in terms of capital as well as store closures and it has an impact on sales but we did it, because it is the right thing to do for the future. I think we're very well balanced at the moment in terms of what VAT benefit will flow to our bottom line and what we reinvested behind our brands and I feel satisfied. We do have this luxury of the VAT benefit and as Ted mentioned, for four months, we could have it non-lapping because it started May 1 of this year. So we continue to keep that as an option if we do not need to drive sales, but a better way to drive sales is actually to give fundamentally better experience in products to customers. As I mentioned several times, I feel very satisfied that KFC has made that journey successfully. Pizza Hut remains a work in progress, I think Joey made some comments already. On the bigger picture on Pizza Hut, Sara, I think there are many countries in the world where we maintain a vibrant Pizza Hut dining business even in this part of the world, including nearby Hong Kong or Indonesia or you know, several parts of Central America or even in developed countries like the UK, India. So I don't see any intrinsic reasons why we cannot maintain a very strong and healthy dine in business, but there is no doubt that the dramatic growth is going to come from delivery. I think Christine mentioned earlier in her question that delivery is about 20%, while -- and to take the overall picture, that is probably low compared to other countries in terms of the delivery percentage. So for sure, home consumption will increase dramatically so I think on Pizza Hut, we see it as a dual growth engine and I will hand it over to Joey to make some quick comments but maybe Ted, first, if you can add to the VAT question or any other observations?