Why can't people with erythema in Tang Yin tell their fortune?

In Huangdi Neijing, it is said that Tang Yin's redness is a heart problem. It can be understood that when you are tired, it is when the yang is the strongest, and the heart is the main emitter. From this point of view, Tang Yin's "Red" is the external image of painstaking efforts, that is to say, there are too many, that is, the function of convergence is not done well, so it can be inferred that the heart has not recovered well. If you are superstitious, it is good luck, money, love and health.