The entanglement between a Chang'an guest who is famous all over the world for his parallel prose but has to rely on his reputation to become an official, the lonely doctor Xuan Hu who saves the world, the sworn brother who has a smooth political career and is "someone else's child", and the young general who is strong and arbitrary but immovable.
Purpose: Even in the heyday of the Tang Dynasty, it was not easy for young people to become an official.