Is it hard for people who always leave a small mouth in their bowls when eating?

This is a superstition, and there is no scientific basis to prove that nibbling the food left in the bowl will lead to bad luck.

People's quality of life and fate depend on many factors, including personal choice, environment, socio-economic status and so on. How many meals you eat, or whether there are leftovers in your diet, are not the only factors that determine your happiness and destiny.

People should look at their destiny rationally, not blindly, and create their own life and value through their own efforts and practical actions.