The light board on the roof illuminated the whole room as if it were daylight, and there were only a few people sitting scattered in the conference room, each with a map in their hands, which was the map of Yuanyi Village that Li Buxue had sent before.

The location of each sewer pipe is clearly marked, as well as the drainage channel of the year.

"As you can see, the reason why this drainage pipe was discharged into the residential water back then was because the sewage channel was very far away from the factory, but if the residential water was cut off from the middle and a new drainage ditch was dug again, the sewage could be confluent with the original sewage ditch, which was also the case back then."

Zhao Cheng crossed his hands on the table, his expression was rare and solemn, and his forehead seemed to be suppressed by dark clouds for a long time, "But."

"She, see the subtle and know the murderer. Chapter 36 The Desire of a Life is in the middle of the hand, please wait a moment,

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