Secrets of Chang'an

During the Wu Dynasty, Crown Prince Li Xinghe traveled incognito with Yao Guards to Nan County, Kyoto, where he met Zhang Xiaomeng who was trying to solve the mysterious case of life and death poison. Li Xinghe met Zhang Xiaomeng, the granddaughter of his former co-worker who was intelligent, lively and lovely, and became his partner. Another unsmiling but extraordinary man, Chu Qi, also came here and helped the two of them in times of crisis and became friends. After several people solved the strange case of life and death Gu, they parted ways, and Zhang Xiaomeng also successfully became a bad person in Nan County. Soon after, a serial murder case reappeared in Nan County. The murderer killed multiple women in a highly ritualistic way and left no clues. Chu Qi appeared again to help Zhang Xiaomeng, but there was little progress in the case. Li Xinghe was hunted down on his way back to the palace and returned to Nan County where Zhang Xiaomeng was located. The two worked together to solve the case and began to fall in love with each other. Zhang Xiaomeng's friend Shen Mei was also caught by the murderer and was in danger. Zhang Xiaomeng went into danger alone and defeated the murderer Yu Wenzhao at the critical moment, but did not have time to save Shen Mei. Zhang Xiaomeng was imprisoned in Dali Temple for accidentally killing Yu Wenzhao, the legitimate son of the Sixth Prince. Li Xinghe was also brought back to the palace, where he encountered the Tubo envoys and negotiated major peace talks. But that night, the fox demon murder case involving the death of Zhang Xiaomeng's father, the mystery of Chu Qi's life experience, and the position of Prince Li Xinghe appeared in the East Palace, and Zhang Xiaomeng had to face it again