What's the secret of Jian Qing's family in Deep Secret?

In the deep secret, Jane is the beginning of evil. Jane and Jianyang are unrelated sisters, and Jianyang came to the provincial capital with her mother's father who married Jane. Jian Qing asked Jianyang to go to the decoration company he founded, and Jianyang gave up his studies. Han Jiang, vice captain of the criminal police team, chased the murderer Ma Hengshan, who died in the struggle. According to the clue, Han Jiang decided that Ma Hengshan was the masked killer chasing Hong Zhiming. Han Jiang found that the relationship between Hong Zhiming and Jian Qing was extraordinary, and Jian Qing's husband, Qi Linjing, was Hong Zhiming's good friend. Just when there was new progress in Hanjiang's work, Jianyang was involved. Jianyang is Han Jiang's lover who fell in love at first sight. Hong Zhiming learned that the real murderer who hired Ma Hengshan to commit suicide was Qi's friend Sun Wandong. He killed Sun Wandong in a rage and then shot himself in front of Han Jiang. Han Jiang gradually realized that today's case is a continuation of past hatred. Jane's father planted the seeds of hatred in Qi Xin, and all the misfortunes began.