Dianping, the leading Chinese ratings & reviews service, confirmed today that Tencent has bought a 20% stake in it. Merchants’ profiles, ratings & reviews, group-buying and online restaurant ordering service on Dianping will work with Tencent’s QQ IM, WeChat and other services, according to the statement. Dianping’s group-buying service has been integrated into WeChat that users can make orders within in and pay with WeChat Payment. Dianping Group-buying in WeChatPay for Dianping deals with WeChat PaymentYou must ask why Tencent doesn’t use its own group-buying subsidiaries? Tencent also had its self-developed group-buying service QQ Group-buy.