...... For foreigners, China's "144-hour visa-free" policy is very convenient. This policy applies to citizens of 56 countries. As long as they hold a joint ticket from a third country, they can stay in a visa-free city for six days without complicated visa procedures. This has surprised many foreigners-originally, it was only a short transit, but I didn't expect to "punch in" the cities in China. This simple and convenient "transit tour" has become the first choice for many foreigners.