Be careful when making friends and judge people based on their heart. According to the query of public information, the root of a tree is rotten and the heart of a person is bad, which means that you need to be cautious when making friends, and you have to look at people’s hearts, life insights and ways to deal with the world. Literally, a tree with rotten roots cannot grow into material, and if a man’s heart is rotten, he will do many evil things. Therefore, it is a reminder to the world that people need to be cautious when making friends and judge people based on their heart.