What happened when the ceiling of the store fell off and the store instantly became a "water curtain cave"?

According to media reports, a few days ago, Mr. Du was talking business with customers. The ceiling in the shop suddenly collapsed and the water was rushing down. The house suddenly became "water curtain cave". When the house was flooded, Mr. Du was furious. Afterwards, Century Tianyuan Home Building Materials City said that Mr. Du changed the fire-fighting pipeline privately, which was caused by the disconnection of the pipeline due to the increase of water pressure during maintenance.

"At that time, I was sitting on the sofa talking about business with customers. I thought it was a small problem and asked the clerk to contact the property. In a few minutes, the water suddenly sprayed down from the ceiling. " Mr. Du said that after the ceiling was soaked, some of it fell and the water poured down.

In Mr. Du's shop, there are several big holes in the ceiling, watermarks everywhere on the wall, and the floor is deformed after being soaked. "The doors and windows are soaked, and the decorative lights on the ceiling are broken, which is completely useless." Mr. Du said that on the morning of May 4, the building materials city property informed to repair the fire pipeline and said that if there was any problem, he would call. 10 or so, the ceiling began to drip, and the clerk followed with a bucket.

The video provided by Mr. Du showed that the ceiling leaked everywhere at the time of the incident, and the water in the store was deep. The waiter took a mop to sweep the water outside the house. Mr. Du said that after about an hour, the water stopped and the ceiling was deformed. Afterwards, he made a preliminary calculation and the loss was around 50,000 yuan.