It's a folk saying that the rich pick jars. Generally, the yards of wealthy families like to put some large jars for planting flowers and raising fish, which represents a sign of wealth.
As the saying goes, "Poor firewood is rich in water tanks", the meaning is very simple and straightforward: "In the old society, there were only firewood stacks in the yards of poor people, and there were big water tanks in the yards of rich people. As the saying goes, "there is a sea in front of the door, and financial resources are rolling in." The "sea" here refers to the big water tank. "The method of feng shui is that water is the best, followed by Tibetan wind." It can be seen that having a water tank in the rich people's courtyard also means good feng shui.