What are Yuede and Jian Yue? It's from "Choose a Day".

Yuede is an auspicious star reflected by the earthly branches of the month of birth and the heavenly stems of the date of birth. Generally speaking, the so-called monthly construction refers to twelve branches, such as Jian Zi, Jian Chou and Yin Jian. [1] In addition, Jian refers to the word 12 indicating the current situation, that is,'' Jian, Man, Ping, Ding, Holding, Breaking, Danger, Success, Closing, Opening, Closing, and Dividing', and the monthly construction refers to the monthly branch of divination in the current month, also known as the monthly order and month will. The establishment of the moon on the 30th of that month has a direct impact on the rise and fall of divinatory symbols. The five elements change periodically in the four seasons and December, and the monthly branch of the season is the monthly construction.