What do you mean by "Hua Fu"?

Fu Ying is a divination method of Chinese folk belief, which is also called Fu Ji, Ju Ji, Fu Luan, Bo Luan, lowering the pen, inviting immortals, Buzigu, Shelf Qi and so on. In Fu Ying, someone needs to play a role possessed by a god. This kind of person is called Luan Sheng or Yi Shen. The gods will possess themselves and write some handwriting to convey their ideas. In this way, believers communicate with the gods and understand their meaning.

In fact, the credibility of the so-called Hua Fu is controversial.