Weixin shares 2021 social impact practices at the Weixin Open Class PRO 2022 GUANGZHOU, China, Jan. 7, 2022 /PRNewswire/ -- Weixin, Tencent's popular social platform in China, saw steady growth in user activities across its in-app features last year, the company said at its annual flagship event for business partners and developers Weixin Open Class PRO 2022 on Thursday....