C1338 If You Are Not Cruel You Are Evil

According to Zhan Yinghong, the Seven Nights Valley was divided into big and small years. These big and small years did not depend on whether it was the twenty-ninth day or the thirtieth day of the twelfth lunar month. Instead, it referred to the 'harvest' of the Seven Nights Valley. During the big year, it was easier to have more good things