It seems as there is nothing secret in China. New anti-terrorism legislation in China requires telecoms and Internet companies to provide “technical interfaces, decryption and other technical support assistance to public security organs and state security organs conducting prevention and investigation of terrorist activities in accordance with law.” You can read more by starting at https://goo.gl/Xyqxe9.
Actually, there’s nothing unusual in China’s new legislation. The U.S. and the United Kingdom have already have or are proposing similar legislation. The UK’s proposed Investigatory Powers Bill as requiring Internet and telecom companies to provide similar “technical support,” and “to take reasonable steps to respond to [warrants for access to encrypted communications] in an unencrypted form.”
You can read my earlier articles about legislative and government agencies’ anti-encryption efforts by starting at https://duckduckgo.com/?q=site%3Aprivacyblog.com+encryption+legislation.