I don't know why I was restricted from entering Malaysia by immigration at the airport.

1. If you leave the country for the first time, you can ask the flight staff to help you communicate and explain clearly that you can generally re-enter;

2. If there is a bad record of overstaying abroad, it is not a problem of air tickets, as long as it is not blacklisted, the problem is not big;

If you really need help, you can contact the staff of China Embassy for help, or find someone who can speak English to help you translate and explain the misunderstanding.