When did Xiayi start to cool down?

Because in sunny or cloudy days, the temperature continues to climb at noon 12, reaches the highest value after 1 in the afternoon, and starts to cool down after 3 pm. So Xiayi began to cool down after 3 pm.

Xiayi is one of the many capitals of the Xia Dynasty. Xia Dynasty was the earliest dynasty in China that existed in the national situation. Xia Dynasty was a dynasty established by Xia Qi, the son of Dayu.