C90 Aunt Zhang's Alteration

I worked hard all the way, and when I was young, I dreamt of going over the wall, but who knew how hard it was to walk on it? The tiles on the roof have been here for who knows how many years, if I stepped on them just a little bit, they would break, so I had to be very careful, or else I would fall down.

Furthermore, the roofs were of different heights