At 7:28 a.m., Li Dongting walked out of the computer room, closed the door and went downstairs, and at 7:30 o'clock, he appeared at the gate of the school on time, and the small door opened for him by the master guard, and the two of them said a few words as usual -- this is exactly what Li Dongting hoped for -- as long as the master guard remembered that he left the school at half past seven -- he would have evidence of an alibi. As for the malfunction of the microcomputer room, he dealt with it on the morning of 12 January -- the reason why he exaggerated his words, asked Secretary Wang to urge him, and kept the lights on in the microcomputer room was to create the illusion that he had been busy in the microcomputer room and had no time to commit crimes.

Walking to the door of the community, Li Dongting met groups of people, people in groups of three or five, standing on the side of the road, discussing the murder of Wudong 206. Downstairs in the eight buildings, he was still in the crowd for a while - he felt that if he didn't listen to it and say a few words, he might arouse the suspicion of others, after all, Mr. Liu was his colleague, and there was such a big thing in her family, he must show his concern! Two well-wishers also asked Li Dongting a few questions -- although people never spoke to Li Dongting, they knew that he was a teacher at Duolun Road Primary School.

Li Dongting returned home, sat by the bed for a while, and then decided to go back to camp in the dark.

"On the night of the crime, why did you go back to camp in the dark?"

"I was so distraught that I was the only one in the room, and I was terrified—I was very scared—I was restless, and I guess it was difficult to sleep, so I decided to go back to camp in the dark."

"On the night of January 12th, why didn't you bring your handbag and 260,000 yuan back to the black camp?"

"There were some people gathered at the entrance of the community, including the inside of the community, and the rain stopped again, and there was no raincoat to cover it, so I couldn't take my handbag out of the community. So I went back to the black camp empty-handed. But—"

"But what?"

"That night, I didn't close my eyes all night, I was always startled and couldn't sleep."

"Last night, you brought your handbag and money back to camp in Black, what was your consideration?"

"I saw you all the time wandering around the neighborhood and the school - yesterday afternoon, you actually ran to our office, I was a thief, I kept my handbag and money at home, I was never sure, as long as you can't find the handbag and money, you can't solve the case, that's what I thought at the time."

"It was raining yesterday afternoon, why didn't you wear a raincoat and choose to have an umbrella instead?"

"I don't have the courage to wear that raincoat anymore - as soon as I see it, I feel terrified and uncomfortable - I want to get rid of it, but unfortunately it's a step too late, before I leave the community, I went to the mall and bought a plastic raincoat, I hung my handbag on the faucet of my bicycle and put the plastic raincoat on top of my handbag - the raincoat just covered the handbag."

If Li Dongting disposed of the raincoat, Ouyang Ping and his comrades-in-arms might have to take a lot of detours and take more twists and turns.

"Why don't you wear your raincoat on your body?"

"When I left the community, the rain was already very light, and I was worried that it would arouse suspicion in the raincoat, so I only took an umbrella."

"Since there is a raincoat on top of the handbag, how can the third man at the ferry see the handbag hanging on the bicycle faucet?"

"I was crossing a bridge when a gust of wind blew my plastic raincoat into the middle of the river. Maybe it's providence! I've been very cautious, but—"

Coincidentally, no book is written, and Li Dongting's explanation confirms this old saying.