Why is it called Top of the Forbidden City?

It can also be said that in the play to have the right to participate in the Babylonian Temple (or to be the champion of the Babylonian Temple Dance Competition) is like trying to climb over the highest insurmountable peaks, it is very difficult, so if you want to climb over the highest insurmountable peaks (to have the right to participate in the Babylonian Temple or to be the champion of the Babylonian Temple Dance Competition) you must not be afraid of difficulties and have the spirit of chivalry