The concubine Chu Linghe volunteered to be thrown into the cold palace in order to avoid the poisonous hands of her aunt. Others who went to the cold palace were crying and waiting to die, but she was lucky. She circled half an acre of wasteland to grow herbal medicine, prepare poison powder, and detoxify strange poisons, and her life was smooth and prosperous. No one knew that she was the descendant of a poisonous doctor with special skills. She entered the cold palace not to avoid trouble, but to investigate the old murder case of the sudden death of her aunt, the late empress, fifteen years ago. Everyone regarded her as a useless concubine who could be trampled upon, and even low-ranking concubines dared to break into the cold palace and slap her wildly. Until Xiao Jingyao, the nine-fifth emperor, climbed on the wall of the cold palace again and again, delivering secret files today and royal medicine tomorrow, the whole palace was in a state of explosion. This cold-faced emperor had long seen through the harem's turmoil and tacitly allowed her to secretly investigate old cases. It was a deal where each got what he wanted. Unexpectedly, after checking, the emperor's heart fell first. Abuse the scumbag concubine, clean up the harem, overturn old cases, and set the course for the dynasty. Chu Linghe relied on his poisonous medicine skills to become famous in the harem and court. On the day when her injustice was settled, she packed her bags and was about to leave the palace, but she was pressed against the wall of the Vermilion Palace by Xiao Jamyao, with a low and hoarse voice: "After curing my country, I must also cure my heart, eh?"