The domineering and cute Chang'an and the gentle and kind second brother, the sinister third brother, the cowardly fourth brother, and the general brother. Their story is specifically about the transformation from a hostage to a noble emperor, who unified the world, treated the people first with worries about the world, and then with happiness after the world. He was a wise king, and the key point was that he conquered four men.
Purpose: How to take care of people