No. Dr. Yang from has a real doctorate. He is engaged in construction work, painting every day and working overtime until late at night, and his life is completely filled with work. The content of his Tik Tok is basically to convey positive energy and national culture. Dr. Yang's talk about keeping in good health is true. Is keeping healthy a verb or a noun? It originally refers to a medical activity to maintain life, enhance physical fitness and prevent diseases through various methods, thus prolonging life.