During the Cheng'an period, Daliang was prosperous on the surface, but secretly there was a mysterious organization called "Underground Palace". They control the imperial army, infiltrate the court, monopolize medicinal materials and weapons, and their influence spreads all over the world.
Su Wantang was an abandoned baby who grew up in Yunyin Temple. Her master left her an ink cartridge before his death, which contained lost secrets on mechanism techniques and toxicology. At the age of seventeen, she was selected to attend White Deer Academy because of her extraordinary talent - a mysterious academy that only accepts women, teaches institutional toxicology, and trains spies for the royal family.
Not long after she entered school, she was involved in a case of a royal concubine's secret room, and relied on mechanical skills and toxicology to solve the mystery that neither the Six Doors nor the Dali Temple could solve. But the truth touched upon the dignity of the royal family. She was silenced by the queen, framed by the prince, and forced to flee south on charges of murder.
On the way to escape, she met Ye Wuhen, a prodigal son of unknown origin. He seeks to detoxify, she seeks to survive, and the two form a temporary alliance. From the bones case on Lianyun Plank Road to the poisonous poison case in Yaowang Valley, Su Wantang used mechanisms to break secret rooms and poison theory to identify the murderer. He solved strange cases in the south and uncovered the true face of the "underground palace" step by step.
When she returned to the capital with evidence, she discovered that she was actually the illegitimate daughter of the queen, and her biological father was an undercover agent in the Forbidden Army. Her life experience, the conspiracy of the underground palace, and the power struggle of the royal family are all intertwined. The blueprint of the mechanical chariot hidden in the third layer of the ink cartridge, and the secret of "telepathy" engraved on the fourth layer, finally pushed her to the underground palace under the imperial city that had been sleeping for forty years.
This is a story about growth, revenge and freedom. Machinery and toxicology intertwine to create a unique suspenseful world. The two strong emotional lines are restrained and touching. The transformation of the Black Lotus makes people feel distressed and admired. There are 135 chapters in the series, about 280,000 words, with a tight rhythm and dense excitement. It is suitable for readers who pursue high-quality ancient proverbs and suspense.
The idea: an abandoned baby who overthrew the entire dynasty with his machine skills and toxicology. Not for revenge, not for power. This is to - from now on, just be your own master.