The reason for suffering is nothing more than asking for a lot but not getting what you ask for.
The reason for regret is that only when you lose something can you realize how valuable it is, but it is irreversible.
All the sufferings of sentient beings originate from the heart. Hate and love are entangled. Only then do you know that one thought is heaven and the other is hell.
Without a heart, there is no sorrow.
Everyone knows that Mr. Wushang is very handsome and famous all over the world, but they don't know that he is an unintentional person.