C390 sibling disease(1)

Pausing for a moment, Yuan Xiaotong asked: "I would like to ask elder sister, have I been eating cold drinks often recently?"

The mother hurriedly said, "Yes, yes, we often eat."

Yuan Xiaotong said: "Some people like to eat cold drinks with ice cold water and cola. It's good to drink like this. However, as the cold drinks into the stomach, the body, in order to maintain normal body temperature