When practicing red dragon stirring the sea, you should be calm, gently stir your tongue up and down, left and right for 9 times in turn, and promote saliva production by stirring your tongue. Then rinse the remaining saliva from the practice and swallow it slowly in three mouthfuls.

Drum washing huachi. The lips are lightly closed, and the tongue moves back and forth 36 times under the drive of the base of the tongue. When the body fluid is produced, the drum gargles with sound, and the saliva is swallowed three times after the mouth is full, and the mind enters the abdomen. This is called "Jade liquid returning to Dantian", which can promote the transportation of spleen and stomach and improve the quality of sleep.

Extended data

The red dragon stirs the sea. This is a classic method of tongue body health preservation in traditional Chinese medicine, which compares human tongue to red dragon and saliva to the sea. Sun Simiao recorded the method of "promoting the morning and relaxing the body fluid" to get rid of diseases and prolong life in his book "Ming of Health Preservation".

He wakes up every morning and moves his tongue until he stirs up saliva with his tongue and then slowly swallows it. This regimen of swallowing body fluid was called "Jade liquid belongs to Dan" by Taoism, which was very popular in Sui and Tang Dynasties. Later people called it "red dragon stirring the sea", commonly known as "tongue skill"

People's Health Network-Jianpi Sleeping Practice Tongue Skill