Zhao Mingyue, age: around 35 years old; From August to November 1989, he rented a room in the West Wing; Current address: No. 197, Sanming Street, Shuizuogang; Work unit: Nanjing Wuzi School (driver).

Wang Zhongkui, age: around 50 years old; From November 1989 to March 1990, he rented the south wing of the east side; Current address, unknown, work unit: Baixia District Tobacco and Liquor Company (station counter).

Chen Hongmei, about 40 years old; From April to June 1990, he rented the north wing of the east side; Current address: unknown, work unit, warehouse (administrator) of Baixia District Material Company.

Mrs. Gao, age: about 70 years old; From July to September 1990, he rented two wings in the east (the second son got married, and the old lady vacated the house she lived in for her son to get married).

In just two years, the tenant door appeared on No. 157 one after another like a marquee, such a long time span, so many tenants, the difficulty of the investigation must be very large, plus some tenants' information is incomplete, so it is inevitable that there will be some loopholes and dead ends in the investigation - Ouyang Ping is most worried about this.

No matter how difficult it is, you have to rush forward.

Ouyang Ping focused his investigation on nine people. In addition, Mrs. Li of the tea stove and the three families of No. 157 South Courtyard will also be the focus of the investigation (Director Gu focused on Mrs. Li and these three families - especially Mrs. Li, because she is very familiar with people in this area).

The three families are:

Su Yingqing, No. 156, age 49 years old, work unit, material company (warehouse manager, in the same unit as Chen Hongmei. The place of work is the place where we mentioned earlier where death row inmates are held. Now, it has been converted into a warehouse).

Yu Dazhang, No. 155, age 56, no formal job, has an inconspicuous façade on Zhonghe Street, Yu Dazhang inherited his father's business and opened a coppersmith shop there.

Tan Weishi, No. 154, age 71, housewife, widowed when she was young, with two children, both of whom are married, cook and wash clothes for their children and grandchildren every day.

Ouyang Ping felt that in addition to providing the above information, Che Huating should also provide some more specific information: "Che Huating, please recall carefully, among the above tenants, are there any men between the ages of 55 and 58?" "Ouyang Ping's question is based on the following considerations: first, the murderer must be one of these tenants - and one of the tenants who have lived in that particular wing room - because only the tenant has the conditions to commit the crime, of course, the possibility of other tenants committing the crime cannot be ruled out, Che Huating said: Sometimes, some houses are unused, and it is safer for the murderer to hide the body in the wall of other rooms; Second, the deceased may be either one of the tenants or someone with whom the tenant has some social relationship. Therefore, in order to determine the identity of the deceased and to find the murderer, it becomes especially important to know the details of the tenant.

But Che Huating's answer was that everyone was very disappointed: "Captain Ouyang, I'm sorry, since I rented out these houses, I rarely come to No. 157, except for bringing tenants to see the house, usually, I only charge rent-"