Today, although many types of outfits are imported, more comfortable, more luxurious, more suitable for the working environment, but on holidays, Tet or weddings, important occasions, ao dai still indispensable. Because the ao dai is both elegant and traditional, and exudes the gentle and graceful beauty of Vietnamese women. Vietnamese ao dai is one of the traditional beauties associated with the customs and culture of the Vietnamese people. Protecting the beauty of Vietnamese ao dai is to protect our culture and customs. Teachers are spiritual people, doing noble things that are teaching the future masters of the country. Therefore, wearing ao dai for teachers is an act to honor the religious profession and honor Vietnamese women.