When I was on a business trip, I met some drunken hooligans when I was eating in a restaurant. They deliberately made trouble, abused or even started work? What should I do?

Since you meet them, you can't be afraid, you don't have to argue with them, and you don't have to call the police in a hurry. Smile and drink whatever you want. If they still don't give up, they can't stand it anymore. Keep an eye on the worst guy, one beer bottle is dry, and the others are gone, hehe.