Can. According to the query relevant public information shows that the teacher is in their own free time, in their personal capacity to shoot a video to promote snacks, and will not affect their work in the school and teaching tasks, then such behavior is acceptable. Before a teacher considers shooting such videos, the teacher should understand the school's regulations for such behavior, comply with the requirements of professional ethics and laws and regulations, and shall not use the convenience of his or her position for personal gain.