Who is the murderer in the script of Smiling Philanthropist?

The murderer of "The Smiling Philanthropist" in the script is Maid Zhou!

First of all, we can rule out reporter Qian as the real culprit. Reporter Qian came for an appointment with Jia Charity (clue: there is a call record with Jia Charity on his mobile phone, time: 18:30). The purpose is to blackmail Jia Charity. He has something about Jia Charity and has no motive for killing him. If Jia Charity dies, he will not get the extortion money. At the same time, if Jia Charity dies within the agreed time, reporter Qian will be very suspicious.

In addition, the knife prepared by reporter Qian for self-defense was not used (clue: there was a brand-new knife in his pocket without any trace of use), indicating that he had no conflict with the deceased. Therefore, the suspicion is ruled out.

Once again we can exclude Boss Sun. Boss Sun has been drinking beer before and consumed a whole box of beer: a pack of soft pack cigarettes, a bit wet, smelled the smell of beer carefully & consumed a box of beer )

The crime scene was filled with liquor, and Boss Sun left the bar at 21:00 and arrived at the scene at 21:15. There was already a fire at this time, so it was impossible for him to go in and kill people. (Clues: Consumption record: City A bar, a box of beer, checkout time: 21:00)

The body only contains drug ingredients. The person who administered the drug was Secretary Zhao. Since it is not fatal, it can be ruled out.

First, Maid Zhou did not use drugs (Mr. Zhou subconsciously thought that the deceased was drunk, prompted by the text message and the environment, so there was no need to wake the deceased up to give him a drink). Just take the drug and do it directly, so the mouth of the drug bottle in the clue is very tight, which implicitly implies that it has not been opened)

Secondly, reporter Qian went to the appointment to blackmail. , he had no reason to drug him; and judging from the timeline, before Reporter Qian arrived, Employer Zhou had already inserted the knife and prepared to blame Reporter Qian.