Tongue coating has roots but no roots.

There is also root coating, also called true coating, which means that the tongue coating is close to the surface of the tongue and is not easy to scrape off. It seems to be born from the tongue, which is caused by stomach qi, indicating that the stomach is alive; Rootless coating, also known as false coating, means that the tongue coating floats on the tongue and is easy to scrape off, unlike the tongue grown by people, indicating that stomach qi is insufficient.

If false fur appears at the beginning of the disease, it means that the pathogen is gradually gathering, the stomach gas is smoked and wet, and the thick fur floats on the tongue. At this time, the rootless coating (false coating) does not mean that the stomach qi is insufficient, but that the condition is mild (the rootless coating here does not mean that we usually think that "it is easy to scrape off, and after scraping off, there is no tongue coating below, and the tongue surface can be seen", but it is aimed at those who float on the tongue surface and are easy to hang off. If you see thick fur in the early and middle stages of the disease (thick fur is the main evil in the stomach, or there is phlegm and dampness in it, food accumulation), it means that the evil is deep, and the evil is of course very heavy, while the true fur means that the stomach gas is firm but not harmful.

So it is in this case that LZ is your statement.