Why do traditional festivals in China fall on odd days of the lunar calendar?

People in China agree with even numbers, but avoid odd numbers. Even recognition first comes from people's feelings about themselves. People's limbs are symmetrical, and two hands can work together. No matter the wedding date or the number of gifts, we should take even numbers. This is called a yes-man. On the contrary, it is just a synonym for malice and frustrations.

The lively traditional festivals are based on unlucky singular numbers. According to China's traditional thinking transformation mode of "turning bad luck into good luck", the appearance of festival celebration is to complete the transformation from bad luck to good luck within one month, and set up a series of festival activities to restrain and overcome bad luck.