On rivers, ponds, pools, wells and puddles: water gathers in Wangcun, wealth gathers in water, and there is a pool in front of the house, not afraid of the five kings. Historically, lots with rivers, ponds, pools and puddles were places where people made a fortune. These places should have a wider field of vision, good air circulation, adapt to the development of production, and have rich material sources, which are suitable for human survival. This is useful, beneficial and good. There are rivers, ponds and wells, and children must pay attention to safety first. "The ponds in front of the house and behind the house are connected, and the young lang will die." This is the negative part of water. Here, the statement about Wang Cai is a relatively uncertain function word, but the statement about security is a substantive content word and a direct problem.