The teacher asked his disciples: how can a drop of water not dry up? Disciples kept silent. The teacher said: a drop of water, the wind can blow it dry, the soil can suck it dry, the sun can steam it, if you want to not dry, you have to let it blend into the sea. A person is unable to support the world by himself. If he wants to succeed, he must learn to cooperate with others. It is difficult to be alone. This is what we often say: no matter how powerful an individual is, he is not as good as a United team.