How can sewage above the 17th floor be left in the bathroom on the 16th floor?

Updated on Bathroom 2024-08-07
2 answers
  1. Anonymous users2024-01-24

    The pipes are all connected, check whether the pipes upstairs are damaged.

  2. Anonymous users2024-01-23

    The sewer pipe is broken, or someone else's sewer pipe is broken and flows to your house.

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