Starting with a Cold Palace, You Let My Concubine Seize the Throne?

Graduate student Lin Han traveled through the Chu Dynasty with his modern memory. He started in a dilapidated palace and was almost poisoned. His own mother died inexplicably. His opponents were the princes and brothers who were like wolves and tigers? Or is he his own father, the emperor, who is in his prime? This hell-difficulty script has no system around me. How can I, a powerless modern bastard, play it? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.