This took place in one of the shophouses in the neighbouring
country
I was taking a bath in the kitchen at around midnight. That night
is quiet. I'm the type who spent long time showering in the
bathroom. Suddenly, very loud sharp knockings (louder than people
using hammer to knock nail into the wall) appear on the right wall
of the bathroom. The right wall is actually attached to the
kitchen!!! Nobody will be knocking nails using hammer in the
midnight, and nearly everyone else has gone to sleep, and there's
no one else in the kitchen. I knew the clue and quickly finish my
shower and dashed out of the bathroom. When I'm out of the
bathroom, the loud knockings ceased. In the middle of the night, I
heard sounds of water showering (same sound as water heater
showering head splashing water) in the same bathroom in the
kitchen.