Thank you for the context, but I find it hard to believe that the HK Chief Executive was not influenced by or seeking favor with China when making the law. Also, this seems to ignore the question of Taiwan's sovereign status and assume they are part of China.

Speaking more factually, China has used unrelated charges to arrest and imprison political dissidents for years now. This is a known phenomenon, and likely the reason behind the protestor's concerns about extradition. The promise not to use the law for political crimes is worthless knowing that history.