How does China Telecom "Tianyi Anti-harassment" set up harassment interception?

Harassment interception setting: You can set the harassment interception (user will) option by yourself through the official account interface of WeChat. The intercepted data sources include suspected high-frequency incoming calls analyzed by China Telecom's big data, 95/400 calls filed with the Ministry of Industry and Information Technology, and harassing calls marked by netizens.

Tianyi Anti-Harassment is an official harassing call, marketing call and user-defined number interception service issued by China Telecom. It can help users automatically intercept high-frequency calls, 95/400 marketing calls and harassing calls marked by Internet users.

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