We can't find this data because the height of the floor is not the goal of the library.

It is speculated that it may be in Hong Kong, because Hong Kong is the most densely populated city in Asia and the world, with a strong commercial atmosphere and a indifferent cultural atmosphere. Unlike Beijing or Tokyo, although there are many tall buildings, it is an ancient city and a famous cultural city after all, and the library and its buildings are generally more historical ~ so Hong Kong is likely to have a library in the tall buildings ~