What does Xianjia mean by saying that my family has a bowl?

It means there is no shortage of food. Bowls are usually used to hold rice, but they can also hold other foods. There are bowls at home, that is, there is food at home, not worrying about eating and drinking. It implies that the family conditions are better and the economy is superior.

In the past, when I was poor, I couldn't eat on rice. If you can save a meal, especially if you don't do heavy work, you won't eat dry food. You don't have to wash the dishes if you want something thin.