What does it mean not to treat bean curd as improper dry food?

1, the sentence "Don't take tofu improperly from dry food" has two meanings. One is Su Yan, which means don't underestimate tofu brain. In fact, tofu is also dry food, which can satisfy hunger and has its own function.

2. Another deep-seated morality is not to ignore some small and ordinary people or things, which will also play their role and value in a certain range.