"So, when you withdrew money from the bank, did you meet any acquaintances?"

"No—I didn't meet acquaintances when I was in advance at the bank—and I couldn't have met acquaintances."

"Why is that?"

"The salaries of our school teachers are all taken by the Industrial and Commercial Bank of Qili Street, which is far away from us, and the residents in this area take money and save money, generally in the nearby bank, and I have never met anyone in the community at the Industrial and Commercial Bank of Qili Street."

"Then you should meet the teacher at the school!"

"Yes, except for the teachers at the school, I have never met other acquaintances, but yesterday, I did not meet the teachers of the school at the Industrial and Commercial Bank of Qili Street."

"Are there many people in the bank?"

"Quite a lot. There were about twenty or thirty of them. ”

Teacher Ma didn't see the teachers at the school, it doesn't mean that there are no other teachers at the Industrial and Commercial Bank of Qili Street.

"If there were school teachers, they would definitely greet me, and besides, although I am retired, I have always had good eyes, and if there are acquaintances, I can't be invisible, although there are many people in the bank, but I only stay in the bank for a minute or two."

"You just said that there are twenty or thirty people in the bank, doesn't it take a little time to queue?"

"There was a student of mine at the Industrial and Commercial Bank of Qili Street, and he took me to the counter to withdraw the money."

Students should be considered acquaintances! Ouyang Ping felt that this information was important: "What is the name of this student?" ”

"I don't know his name, I've taught a lot of students, but most of them don't remember their names - they know me, I know them, but I can't remember their names for a long time."

What Mr. Ma said is also true.

"You should know what your last name is!"

"The surname Gui - the 'Gui' of osmanthus. Their Chinese teacher Zhang Youjin was sick and hospitalized, and I substituted for Teacher Zhang for a week's class, and the students' memory is stronger than that of the teacher! ”

"Has this student ever been to your house?"

"No—the old woman doesn't know him, it won't be him—it won't be him."

"How can you be so sure?"

"First, he didn't know where I lived—he never asked—and I never said that if he came to my house, the old woman wouldn't open the door for him, didn't I say before? People who don't know, old women won't open the door. ”

"What if it's a student who comes to you?"

"It's simple, if I'm not at home, the old woman will ask her to come back another day."

Teacher Liu is not only vain, but also a little unkind - in Jingnan dialect, it is a bit 'sandwiched'.

"What does this student do at the bank?"

"He's working at the counter."

"What time is the counter?"

"Counter Three -- he's been working at Counter Three."

"Is there anything special about this person?"

Ouyang Ping will not let go of any suspicious object, Duan Dawei is a student of Teacher Ma, and now, another student has appeared, Ouyang Ping can't help but attach great importance to it.

"Tall - about 1.80 meters! , thin, with a black mole on the arch of the eyebrow of the right eye. ”

Ouyang Ping pinned his hopes on Mr. Ma, so in Ouyang Ping's view, all the information provided by Mr. Ma was very important.

That night, Ouyang Ping knocked on the door of Duan Dawei's house - Room 203 of Unit 1.