Someone Knocks on the Door in the Pipe

[No CP] [Urban Suspense] [Professional Detective] [Folklore and Weird Tales] At 2:17 in the morning, 417 water meters in an old community in Lanjiang City began to reverse at the same time. Water supply leak monitor Chen Du rushed to the scene, but heard a sentence in the old pipe that did not exist on the drawing: "Don't open valve seven." In the urban water supply network, there should be only the sound of water flowing. But Chen Du could hear the "sound traces" left by the deceased in the water - cries, pleas for help, lies before death, and the call to him from his father who had been missing for eighteen years. But the sound in the water never equals the truth. They can become mutilated, blend into different eras, and even imitate living people. Chen Du must rely on water pressure, flow, valve isolation and water quality testing to turn each strange echo into real evidence. The price is that every time he listens to it, his hearing will get worse and the voices of his loved ones will gradually disappear from his memory. Until one night, the whole city was without water for three minutes. After the water supply was restored, familiar voices rang out from the water pipes of thousands of households.