Unfortunately, because of the professions of the two teachers, they know a lot of acquaintances, in addition to people in the community, there are also colleagues in the school, and more are past students of the two teachers.

Based on the above understanding, Ouyang Ping still takes the community as the focus of the investigation, and the other focus is the school. Teacher Ma said that in addition to often chatting with people in the community, Ms. Liu is more of a school colleague - as long as she meets a colleague at school, she has endless words. From a psychological point of view, most of the objects of people's vanity are people who live around them for a long time, in other words, if Mr. Liu wants to show off something, school colleagues should be a group that cannot be ignored, the school is near the community, and Mr. Liu may meet school colleagues at any time. After meeting, I must pick up the most proud and enviable things and say that my daughter and son-in-law will return to China and run a company. Is it unreasonable for the old couple to financially support their daughter and son-in-law to run a company? Teacher Ma even affirmed: "As long as she meets a colleague in the unit, she will definitely talk about it." Teacher Ma also said, "On the morning of the 12th, Mr. Liu went out for a trip, and if he didn't get it right, he was going to put money on the matter. If you are doing well, why should you shout all over the world? ”

The reason why Ouyang Ping stayed in Duolun Road Hotel was because of the above considerations.

Chen Qiming sisters must know the murderer, in addition to the people in the community, there are also school teachers, Ma and Liu both teachers are teaching at Duolun Road Primary School, as nieces Chen Qiming sisters, they have a lot more contact with teachers than ordinary students, and the school teachers will pay more attention to Chen Qiming sisters.

After that, the comrades investigated and visited the community and school for three days, but found nothing and had no clue.

The focus of the investigation is: on the morning of the 12th, who did Mr. Liu contact with during the time he was out.

Unfortunately, no one knows who Mr. Liu has been in contact with, and the only person who provides Mr. Liu's whereabouts is Wang Baoting, the owner of the barber shop, at about nine o'clock in the morning on the 12th, Wang Baoting saw Mr. Liu carrying a vegetable basket to the big vegetable market next door. When he went home, Wang Baoting didn't care.

The strange thing is that many people in the community went to the vegetable market to buy vegetables at about nine o'clock, and Aunt Hao also went, but Aunt Hao and everyone else did not meet Teacher Liu - it stands to reason that they should be able to bump into him.

No one saw Teacher Liu, Aunt Hao said that there was only one possibility: Teacher Liu met someone, and then chatted, Teacher Liu is a very talkative person, no matter who it is, as long as she opens the chatterbox, then she must be patient to listen to her finish speaking, and her words are difficult to finish, because she is too nagging, some words, she can repeat many times, others are tired of listening, but she doesn't know at all. There are people coming and going in the vegetable market, and it is definitely not appropriate to stand at the intersection and chat, so she will find a secluded place, which is probably the main reason why the people in the community did not meet Mr. Liu!

This time, the comrades could be regarded as having encountered a formidable opponent, and by January 17, there was no clue to the case at all. The murderer seemed to have evaporated from the world.