Because Ren Jialun is attentive. According to the relevant information on Weibo, we learned that Ren Jialun’s Weibo comments are mostly due to Ren Jialun’s sincerity. Anyone who has read Ren Jialun's Weibo knows that he does not just post a random sentence or two on Weibo, but often posts long copy. Whether he is posting about himself or helping friends forward publicity, he is very attentive.