What should the younger brother of Meituan do if he calls to harass?

You can install a Tencent mobile phone housekeeper to intercept, open Tencent mobile phone housekeeper-security protection-harassment interception, and blacklist all the called numbers. This will prevent these numbers from harassing users by calling again. Finally, you can "report" intercepted harassing calls, which can improve the accuracy of interception by Tencent mobile phone housekeeper and make "intelligent interception" more reliable.