What is the meaning of "Weng Zhu" in the Korean drama Feng Shui?

Wengzhu No.1 first started in the Western Han Dynasty in China, also known as the title of Liu's daughter. Weng is the father and Wang is the vassal. It refers to the fact that when a warlord marries a wife, he marries in person, which is different from the fact that the son of heaven does not marry a woman, so he is called Weng Lord and Wang Lord.

In the early Liao Dynasty, Lu Ye Mock Rose, the second daughter of Lu Ye Deguang, Emperor Taizong of China, was called Mock Rose Wengzhu, and the daughter of Lu Ye Anduan, the Ming king of Liao Dynasty, is now called Ain Wengzhu. These two Weng masters in Liao Dynasty are recorded in Volume 78 of Liao History, Biography of Eight and Biography of Xiaohaitang.