1月15日，学习强国发微博：欢迎各位国内国外新老朋友下载使用“大红书”让我们一起学习，一起进步。

On January 15th, Xuexi Qiangguo posted on Weibo: "Welcome to all domestic and international friends, both old and new, to download and use 'Da Hongshu' (The Big Red Book). Let's learn and progress together."