In the last life, Shen Qingning was the most useless queen in the harem. After a glass of poisonous wine, she died in the palace and became cannon fodder in other people's love stories. In this life, with an ancestral book on herbal poisons and a head full of modern chemistry knowledge, she was reborn back to the moment when she was given the poisonous wine. Facing the poison handed to his mouth, Shen Qingning smiled slightly and drank it in front of everyone. Under the horrified gazes of everyone, she wiped the corners of her mouth gracefully and slowly took out a small bottle of "antidote" from her sleeve. "Thank you, my dear sister, for the gift." She shook the empty cup in her hand, "It's just that the purification technology is a bit rough and has too many impurities, which affects the taste." Imperial Concubine: °Д° From then on, the style of deep palace painting changed drastically. The concubine Li who framed her started doing the "Compendium of Materia Medica" aerobics the next day and couldn't stop at all. The prime minister who framed her father and brother suddenly performed a Bbox in the court hall, shocking both the government and the public. The second prince who was trying to change the palace wanted to sit on a chair and cosplay with a quiet sunflower. Shen Qingning said: My revenge never lasts overnight, and is drip-fed accurately. The main theme is "keeping you alive, but not fully alive". After she sent her last enemy to become a "vegetative state", the aloof emperor, Xiao Yan, the most noble man in the Zhou Dynasty, blocked her way. Shen Qingning is ready to die together: "?" Xiao Yan: "I see that the queen is very skilled and has novel techniques. I wonder if you can... Open a poison training class for me, Da Zhou? You will be the lecturer, and I will give you the title of 'Royal Special Professor of Toxicology'." Shen Qingning:? ? ?