The reclusive genius doctor Shen's family was brutally wiped out, and the only daughter Shen Qingnang bore a blood feud and disguised herself as a male doctor "Gu Yan" to sneak into the palace. She relied on her ancestral medical skills from the "Qing Sang Jing" to stand out in the examination of the Imperial Hospital. However, she was framed by the powerful Prime Minister Li Fu's gang members and was demoted to the cold palace because she discovered that the prince Xiao Jingyan was poisoned. In a humiliating predicament, she subdues the Shen family's shadow guard, Gray Pigeon, and encounters the mysterious abandoned queen Pei Wanrong. She unexpectedly discovers that the "pulling machine" has the same origin as the Shen family's murder case.
In order to take revenge, she endured the humiliation: the wounds on her corset festered and she still risked her life to taste poison. She pretended to be stupid and dealt with wolves, and she used silver needles to save people and kill people. When Li Fu launched a palace uprising to kill the king, Shen Qingnang used the Tiger Talisman to mobilize troops to quell the chaos, publicly exposed his twenty-year crime of controlling the government by controlling drugs, and killed his enemies in the execution ground. After the crown prince ascended the throne, she refused to be granted a posthumous position, founded a women's medical school as an imperial physician, and permanently sealed the "drawing mechanism" poisonous prescription in the last volume of "Qing Nang New Code".
In the end, she stood in front of the prestigious gate of the medical school and watched the homing pigeons flying to the public with admission notices. The silver needle is in the sleeve, no longer to kill, but to protect the doctor's kindness that was exchanged for blood and fire - to end the cycle of hatred with a way to save the world.