A team dinner is a dinner, and it can also be counted as part of the group building. It's a way of emotional contact. Dinner can make people who have a good impression on themselves get together, have a good chat, care about each other and enhance their feelings.
Team building is the abbreviation of team building dinner. Team building refers to a series of team optimization behaviors, such as structural design and personnel motivation, in order to maximize team performance and output, so as to enhance the happy energy of the team.