"What's the problem?"

"The child's father understands this, he said that Mr. Li earns at least 2,000 yuan on each computer, and when he has a parent-teacher conference, he grasps that he is called outside alone to talk about the computer, he is the child's teacher, we can't wipe face, and he is planning to buy a computer for his daughter, so as far as I know, he also found two other parents, both of whom are in better financial conditions. The more I think about it, the more wrong it becomes, and that's the main reason why I don't want to tell my children about it - I'm afraid of polluting my children's ears. ”

"Mr. Li sells you computers, do you have any invoices?"

"No, he didn't mention it, and we're embarrassed to mention it."

Li Dongting is seriously suspicious.

On the way back to the hostel, Ouyang Ping thought of a detail: the reason why the murderer calmly killed Mr. Liu and his two nieces must have been on time for Mr. Ma and Ma Wenjing to go home.

So, the four of them knocked on the door of Mr. Ma's house again.

Mr. Ma provided a very important situation: on the afternoon of January 12, Mr. Liu arranged for Mr. Ma to go to the five-star electrical hypermarket on Shanxi Road to buy a network card, and Mr. Ma left home at 3:40. The time to get home is around 5:40, and according to the distance, no matter how fast Mr. Ma's movements are, it will take about two hours to go back and forth.

This must have been deliberately planned by Li Dongting. 260,000 yuan in the big closet, it will not be put for too long, the time is fleeting, this money is sponsored by Mr. Ma to run a company by his son-in-law, on the evening of the 12th, Ma Wenjing and Chen Hongxiang are very likely to come to get the money.

Ouyang Ping felt that there must be something famous in this.

Ma Wenjing said that she and her husband are usually very busy, so they rarely come to visit their parents and two children, and even when they do, it is around seven o'clock. He also said that she had already told her father that she would come to get the money on the night of the 12th.

The murderer must have been accurate Before Mr. Ma returned home, Liu Lao was the only one at home in the family, and he calculated the time when the two children got out of school, he was a teacher at Duolun Road Primary School, and Chen Qidi's math teacher, he had this condition.

In addition, Teacher Liu has a habit of cleanliness and does not like others to visit her house, so ordinary people will not patronize Teacher Ma's house when there is nothing particularly important, and the murderer is also aware of this situation - Li Dongting should have been to Teacher Ma's house - maybe more than once, plus he and Teacher Liu work in the same school - Teacher Liu has just retired. Therefore, he should be familiar with Mr. Liu's personality and living habits.

Li Dongting is basically locked.

After that, Ouyang Ping and others went to Building 8 403.

Before going upstairs, everyone looked up at the balcony and room of Li Dongting's house, there were a total of six households on the fourth floor, and only the black light No. 403 was blind.

It is estimated that Li Dongting went back to Heizha to get sick.

Ouyang Ping knocked on the doors of 401 and 402.

The 402 people said they didn't see Mr. Li and didn't know where he went.

The 401 person said that he saw Mr. Li go out at about five o'clock in the afternoon and said that there was something wrong with going home.

"Sister-in-law, how many people live in No. 403?"

"Just Mr. Li, he hasn't got married yet."

It is more convenient for one person to commit crimes.

Ouyang Ping immediately called and invited Hou Changhong, a lockpicking expert.

At half past seven o'clock in the evening, Ouyang Ping, Liu Dayu, Chen Jie and Hou Changhong went to the first unit of the eighth building.