I remembered when I was in my primary school, there used to be a
small walkway leading from the School Talent Corner at 3rd Floor to
the backstage of the hall. My friends and I were curious and one
day, we plucked up our courage and walked in. At the left of the
walkway was a concrete wall and the right is the hall at the
2nd Floor. We walked slowly and found out that there were many
tables and chairs at the end of the walkway. Further down, there
was an staircase. One of my friend quickly climbed down so we
follow him. Suddenly, while walking halfway down the stairs, we saw
a door near the staircase opening! We thought it was a ghost and
quickly ran down to the 2nd Floor. The 2nd Floor was just the
backstage of the hall so we ran to the 1st Floor. The 1st Floor was
filled with tables and chairs just like the 3rd Floor. There was a
metal gate shutter near one chair. We tried to open it but we
couldn't. We quickly ran back to the 2nd Floor and exit via the
backstage. It was an experience that I will never forget.