What does the word "Hu" mean in the title of Water Margin?

1. According to the Book of Songs Yasubo (one word): "The ancient duke and his father came to fetch horses from the DPRK and led them to the water margin in the west. As for ambiguity." In other words, our grandfather and ancient father moved to Qishan in the process of creating the Zhou Dynasty, which laid the commercial foundation of the Zhou Dynasty and gradually shaped the country.

The second is that Song Jiang and others live in, waiting for the Song Dynasty to win over and serve the court, just like waiting for an opportunity to assist King Wen by the Wei River. Song Jiang and others are not thieves, and Shui Bo is also a "king of soil". Hence the name "Water Margin".

The third is that Song Jiang and others are thieves and fierce things, like garbage thrown at the water's edge. Heroes of the Water Margin are all rubbish at the water's edge. This is Jin Shengtan's explanation.

Fourthly, it is considered that Water Margin has no special meaning, and generally refers to all kinds of stories that happened at the water's edge.