Introduction to the well: There is a well in the courtyard that is different. Not only does the well water never run out, but what’s even better is that its water level is always higher than the ground. The Zhu family regarded it as a "source of wealth". Because the water level is so high, there is no need for a bucket and you can reach it with your hand. There is a small hole on the edge of the well. It is said that when the water level is at its highest, the well water will overflow from the small hole and flow in the four corners of the courtyard, which is also called "rolling wealth."