Phonetic Fu is divided into Andrew Fu and Bianyin Fu. Then, the Yin House is a great evil in choosing a date in Feng Shui, and many date selection systems should pay attention to it, especially the positive five elements. The formula of five elements of Yinfu: dry Jiayin in the afternoon belongs to soil, while dry Jiayin belongs to water, ugly Jiayin belongs to wood, Shen Chenzigui belongs to fire, and the sea is not gold.