Endogenous dryness is caused by a lack of bodily fluid and is linked to yin deficit. Because bodily fluid and blood may turn into each other, a lack of blood promotes dryness as well.
To treat dryness, herbs have long been utilized in Chinese beverages and soups. Maidong (dwarf lilyturf), mulberry leaves, and lily seeds are the simplest to come by, according to Wang. He highly suggests qingzao jiufei tang, a TCM recipe that literally translates as "soup that counteract dryness and moistens the lungs."