What is the situation of foot fever after practicing Tai Ji Chuan?

It is normal. Don't be happy or surprised. Are normal physiological reactions. You don't have to pursue it. Tai Chi Chuan, take your time. Scientific practice is good for your body and mind.

Fever on the soles of the feet is usually caused by several reasons. 1. After exercise, the blood vessels dilate and feel fever. When the weather is cold, the body will naturally react. I feel hot after practicing for a while and cold after practicing for a while. 3. I usually feel hot when I exercise less and my feet move.