Precautions:
Rice porridge: rice soup, millet porridge, thin batter, egg white, protein water, soybean milk, milk, tofu, steamed egg custard, thin lotus root powder, thin potato powder, thin Polygonum multiflorum powder, lotus seed powder porridge, mung bean powder porridge, water chestnut porridge, etc.
Soups: chicken soup, bone soup, clear soup, clear duck soup, clear fish soup, clear red jujube soup, longan soup, clear lotus seed soup, clear coix seed soup, fruit juice and vegetable juice: tomato juice, orange juice, pear juice, sugarcane juice, grape juice, watermelon juice, strawberry juice, peach juice, coconut juice, green vegetable juice and spinach juice.
It is ok to eat only liquid food one day in a week, but if you increase the frequency, more than twice a week, you must not just drink porridge or soybean milk, but must cooperate with vegetables, bean products, meat and so on.