It is useless to say that one person is inferior to another.

Proverbs that describe a person are useless to a good one: rotten wood cannot be carved, mud cannot help the wall, and sinus cannot help the wall.

Dead wood can't be carved, and mud and sand can't be carved. It means that it is useless to help you no matter how much, and it is useless to describe one person as good as another.

Proverbs refer to concise phrases that are widely circulated among the people. Most proverbs reflect the practical experience of working people, and they are generally handed down orally, mostly short sentences or rhymes in oral form. Besides, proverbs, like idioms, are part of the whole Chinese language, which can increase the uniqueness and vividness of the language.