Where would you like to sleep if you are a student? Asians have chosen a special place where to get their "zzz's". Maybe they sleep here better, I don’t know.
Other students that like sleeping in the library:
Sleeping in the Library (45 pics)
If you can’t translate something from one language into another one, better use the original phrase. Otherwise you will look hilarious just like these Asians who are wearing Engrish t-shirts.