What does it mean to be kind to others? How to understand this idiom?

Being kind to others is the traditional virtue of the Chinese nation and an important criterion for people to be human. Being kind to others contains rich connotations. Mencius said: "It is also good to be kind to others, so a gentleman is nothing more than being kind to others." It means that the highest virtue of a gentleman is being kind to others. Later, the meaning of being kind to others was expanded to mean being kind, considerate and helpful to others. No matter who likes to be kind to others, it is actually not for anything else, but for the joy in the heart. People live a lifetime, nothing more than the pursuit of happiness and happiness; With joy, life is meaningful, and the living water of life can irrigate a happy mind. Therefore, we should go with a kind heart, treat others with sincerity, help others, and reap only kind fruits, sweet and refreshing; As the saying goes: "Give someone a rose, and your hand has a lingering fragrance." Say something from the heart. To be kind to others is to be kind to yourself.