Ha. . . Just yesterday, I just saw what Professor Yu Kang said in the Yangshengtang of Beijing Satellite TV: 1. Milk must be drunk; 2。 /kloc-children over 0/0 years old should insist on drinking milk, and the drinking amount should be controlled at 250 grams (about half a catty) every time, 1-2 times a day; 3。 People who are intolerant of milk (that is, do not digest or absorb it) can drink yogurt instead.