How big is the household crescent cup?

Household crescent cup 250ml is appropriate. According to Lv Yongnan, deputy chief physician of Wuhan University People's Hospital, the amount of drinking water at a time should be about 150 ml, and it is best not to exceed 200 ml. Drinking more water is beneficial to the secretion of metabolic waste in the body. The normal amount of drinking water per person per day is about 2000 ml, which can maintain the normal physiological needs of the body.