Apparently, the underground passageway for exiting riders is not the ideal substitute for a bed (or one of those super-deluxe seats in Business Class). For if you attempt to lie flat there, you’ll be hurried out of the place — by this sign:

The idea here is that you should have either done that one the train — or that this passageway should be kept free so that it’s always ready for the occasional, always-unannounced stampede of riders…
What It Should Read: Please Keep Passageway Clear. instead
Taken at the Langfang Railway Station