I Hold the Yin and Yang to Control All Souls

My name is Chen Jiuyuan, and I am an unlucky guy with a bad luck. My mother died when I was three years old, my father died when I was five years old, and my grandpa suffered a stroke at the age of seven and has been bedridden to this day - the entire Chen family knows that I am the reincarnation of a broom star. At the age of eighteen, my grandfather finally died. Before he died, he put a bronze token engraved with the word "Zhen" into my hand and told me that the Chen family has been in the Soul Zhen Division for generations, specializing in the souls that "cannot escape" in the Yin and Yang realms. I thought he was talking nonsense. Until the first seven days, I saw with my own eyes that my grandfather's soul was trapped in the coffin and couldn't get out—— "Jiuyuan, the rules of the Soul-Suppressing Division are that debts owed by the living must be repaid by the dead. Now that you have accepted the token, you will have to collect all the debts in this world from now on." From then on, I became the last successor of Zhenhun Division. The ghost of the corpse stitcher wants me to redeem him, the female ghost under the water wants me to seek revenge, and the ghost of a hundred years wants me to investigate the murder case—— Behind every supernatural incident is an unsolved human case. And the secret hidden behind the Soul-Suppressing Division seems to be... Even more terrifying than the ghost.