Man-wai Chang wrote:

The toilet is a Roca Victoria-05.

I was trying to repair the bulb socket at the ceiling of the toilet. I
stepped down from height, putting my right foot on the edge of the Roca
toilet seat (covered), and it cracked into 4 pcs, with sharp edges.

It's lucky that I DID NOT put my foot on the center of the toilet cover,
or my lower leg's flesh would be shaved!

Hmmm,
So you are advertising your foolishness?
Safety comes from common sense.