Who is the murderer of the fourth act of the market madman script?

In this script killing, Master Cao, who lost his son, wants to find a new heir to protect the spell, but Master Cao can't be related by blood, because the only heir now can only be Sun Baoan.

However, because Sun Baoan's father violated the ancestral rules, he was arguably disqualified from inheritance. Therefore, in order to pass on the ancestral things, Master Cao had to adopt a 2-year-old child from an orphanage. His name is Qin Moumou, and later he was renamed as curator Cao, just like his son.

The word "script killing" comes from the "mystery of killing" played by Xi Shi, which is a project for players to experience reasoning in real venues.

The rule of script killing is that the player first chooses the role, reads the script corresponding to the role, and finds out the real murderer hidden in the activity after collecting clues. Script killing is not only a game, but also an entertainment project that integrates knowledge, psychological game and strong social attributes.