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The special homicide case that was unsolved in 1997 resurfaced 13 years later. Criminal policeman Wei Zhengrong, who wasn't able to find out the real murderer that year was traumatised and left the front line. The once fledgling new policeman Lu Xingzhi grown from his innocence and has become a meticulous criminal investigation expert. The many coincidences of the case brought the master and apprentice together again to hunt down the real culprit.
Ruan Liuzheng returns to her hometown after seven years, and becomes a neurosurgeon at Beiya Hospital. However, she didn't expect to meet her ex-husband, Ning Zhiqian, who is the most experienced neurosurgeon. Ruan Liuzheng is no longer the weak and timid girl, and she shows resolute and determination in both her work and relationship. When they were in Africa to execute medical relief efforts, Ning Zhiqian was injured in a gunshot. Ruan Liuzheng didn't leave his side, and fought hard to save him from the brink of death. The two have gained a new understanding of life, and begun a new relationship again.
Black Girl is a deaf-mute prisoner. Prison guard Deng Hong found White Fox, a prisoner who understands sign language, to supervise her transformation. The two made money together after serving their sentences, met Deng outside the prison.
On guard! Zhou Fei's sword is created by the essence of his parents: the mother is the blade and the scabbard is the father. Many years ago Zhou Fei's grandfather Li Zhengwei was poisoned to save Duan Jiuniang. The forty-eight fortresses were lost during a surprise attack by the False Emperor. Zhou Fei's mother, Li Jinrong - a young girl at the time - was fierce and reckless, and her sword skills were not yet accomplished. Having lost her family and her father, she went to Liang Shao's strategist Zhou Yitang to ask for help. When Liang Shao refused and Zhou Yitang was ambivalent, Li Jinrong went north alone, determined to assassinate the false emperor.
