Ha, is the example saliva? For example, it is actually a kind of saliva, which is called by northerners.

Saliva is what we call saliva. Normal people will drool all the time, indicating that the stomach acid in the body is too heavy, and then the line fluid is developed, and then the saliva is upwelling. At this time, you can eat some alkaline food, such as pig's tail, which can alleviate the drooling.