Dream of the Red Chamber: Jia She’s Concubine-Born Son Trains His Body from the Start and Makes a Comeback

Transmigrated as Jia Xuan, the illegitimate son of Jia She, he is abandoned in a dilapidated courtyard to fend for himself. Three months ago, he brought a body-tempering manual with him from the modern world. Now, seven or eight burly men can't get near him. The Jia family is doomed, and he won't get involved in that mess, but Daiyu and the others must be saved.