A poor scholar and a dissolute concubine-born son. The two of them smashed their way all the way from Ningzhou to the capital, investigating the grain transport, fighting powerful eunuchs, toppling the secondary councillor, and overturning vassal kings. The least reliable brothers speak the most reliable words — you investigate the case, I accompany you. You smash the wall, I cushion your back. Later he went to the border, and everyone said he was dead. Four years later, a cripple stood at the doorway, grinned, and said — "Chen An, your father I has returned."