Autumn is over and winter can look forward to the next sentence, the warm sun hides everything. Autumn is over, winter can be expected, and all things are hidden in the warm sun. This is from Wu Cheng's "Collection of the Seventy-two Hours of the Moon Order". "Collection of the Seventy-Two Hours of the Moon Order" is a written work compiled by Wu Cheng, a scholar in the Yuan Dynasty. His book divides the seventy-two periods into the twenty-four solar terms, divides each solar term into three periods, and explains the reasons for each.