In order to save her seriously ill younger brother, Wei Yingyao sold herself into the Wei Mansion as a maid, but because of her exquisite medical skills and photographic memory, she earned the scorn of the eldest son Wei Yuan. He is the jade-faced gentleman who is famous in the capital, with thunderous skills hidden under his gentleness and elegance; she is the fallen jewel of a general, with a strong and proud character wrapped in her weak appearance.
From a maid to the richest man in the imperial business, she decided life and death with a silver needle and controlled the world with an abacus; from testing each other to trusting each other in life and death, he was willing to resist imperial edicts, rectify unjust cases, and subvert the court for her. There is a murderous intention hidden in the deep courtyard of Wei Mansion, and the mystery of the murder of the past year is hidden. When the three-inch silver needle meets the jade pen given by the emperor, this encounter that started as a calculation will eventually become a legend spread throughout the world.
Concept: "Silver needles embroider mountains and rivers" - the heroine Wei Yingyao relies on her medical skills and wisdom to counterattack from a slave maid to a business overlord, showing the tenacity of ancient women to create a new world in desperate situations