惯例 (guàn lì): convention; usual practice

According to convention, the company holds an annual party before Spring Festival every year.

This is a local convention that has continued for hundreds of years.

Although he was reluctant, he still followed convention and toasted his elders.

Breaking convention is not easy, because people are already used to the original way of doing things.

In international exchanges, respecting each other's conventions is very important.