What diseases can be found by observing the face and tongue in TCM?

Healthy people are ruddy and shiny, and the diseases are found as follows: yellow in traditional Chinese medicine: mostly refers to the spleen and stomach, and the digestive system is not good; Chinese medicine sees white: refers to the lungs and respiratory system problems; Traditional Chinese medicine looks red: it refers to the problems of cardiovascular and cerebrovascular systems; Chinese medicine looks at blue: it refers to the liver and gallbladder, and the immune system has problems; Chinese medicine looks at black: it refers to the problems of kidney and bladder system. Healthy people's tongues are pink. The diseases that can be found by observing the tongue are: observing the thick coating of the tongue, indicating that the spleen and stomach are not good, observing the blue base of the tongue, indicating kidney is not good, observing the tooth marks on both sides of the tongue, indicating that the liver is not good, and observing the whitening of the tongue, indicating that the heart is not good and the myocardial blood supply is insufficient. Poor blood circulation refers to symptoms of anemia. Observing that the tip of the tongue is purple and dark, it refers to excessive heart fire, which is bloodshot and bloody. Observe that there are many dots and red spots on the tip of the tongue, mostly referring to myocarditis. Observe that the tip of the tongue is not sharp and there is a deep groove in the middle. Many fingers may have diabetes.