Eating at a non-kosher Chinese restaurant can be difficult. Culturally they’re often not as forthcoming on clarifying what is or is not vegetarian. Often they’re mom and pop operations and possibly there’s a trust issue.
but let’s say you get past all that and you go to a chain store or a larger more established restaurant. Chinese food is often all mixed together. If they do have vegetarian dishes, that would be fine, but watch out for bishul Akum. Vegetable lo mein should be good. Probably the egg drop soup and the vegetable soup. Don’t forget to ask. All types of mixed vegetables that are capable of being eaten raw are ok. Fortune cookies are good too. Rice is a problem.
enjoy