Why do mainlanders need documents to go to Hong Kong? And why don't Hong Kong people apply for documents when they come to the mainland?

China implements "one country, two systems", and Hongkong and other places are one of these special places, so it is necessary to restrict them. In many 147 countries, such as Britain, Hong Kong is visa-free, so if a large number of mainland residents enter Hong Kong. Smuggling out of the country again will inevitably have a bad influence on the image of China. Mainland residents who want to go to Hong Kong must hold Hong Kong and Macao Pass and valid endorsement (valid endorsement must be made in advance) before they can go to Hong Kong. Travel endorsement stays for up to 7 days at a time. This was not formulated by the Hong Kong SAR Government, but by the China Government. Who is to blame for the fact that citizens of the same country are treated differently internationally?

The simplest reason is that I have never heard of Hong Kong people smuggling or absconding abroad.

However, these behaviors in the Mainland are internationally renowned.

Even our own country is afraid to let its mainland residents enter Hong Kong. Not to mention other countries.

Can only blame international influence and national quality.