Which of the following is NOT a function of Jin Qi?

Jin Qi, also known as "clear qi" or "nutritive qi," plays various critical roles within the body's functions and overall health in Traditional Chinese Medicine (TCM). One of its primary functions is to circulate and nourish the body, including moistening the skin, producing bodily fluids such as saliva, and maintaining a balance of fluids, which is essential for proper physiological functioning.

The function of circulating on the interior is typically associated with another type of qi or element in TCM, rather than Jin Qi specifically. Jin Qi is primarily concerned with nourishment and moisture, thus directly supporting functions like skin health, production of fluids, and maintaining hydration. While it does support various metabolic processes, it is not involved in the deeper circulatory aspects that are considered to fall under other types of qi or body fluids.

This understanding helps clarify why the function of circulating on the interior does not belong to Jin Qi, making it the correct choice in this context.