What are Schengen countries? Simply put, don't copy from the internet. Besides, I read today's newspaper that I need a visa to go to Chongqing from Yunnan. 2000-3

First, let me explain the Schengen countries. So far, all Schengen countries are from EU countries, and 26 countries have joined the Schengen Convention. Nationals of these countries can move freely in all member countries without a visa (including travel or short-term residence).

Next, let me explain a visa. Simply put, a visa is a document issued by a country's entry-exit administration (such as the Immigration Bureau or its embassies and consulates abroad) to approve the entry of foreign citizens. As you mentioned above, both Yunnan and Chongqing belong to the territory of China. It's nothing for China citizens to go abroad, let alone get a visa. If you need to travel, it is no problem to bring your ID card to any province or city in China.

You can ask questions, I hope it will help you.