I'm hoping someone knows something about this in China because the prison planet aesthetic is getting to me. I don't believe every residential window everywhere does need to be secured by a cage. I believe there must be ways for a window to be window, to let in light, air, the unobstructed view, and none of the lurking marauders who will hang from ropes until YOU are dead because they will break into your apartment and cut your throat because burglary and murder carry the same penalty in China, like everyone says.
Or, to put the question more plainly, are their options for securing your windows that aren't based on jail cells? What are the options for window space that is large, has a great view, and really should be open every day because the air moving in the apartment is delightful, but which also can be secured (open and closed) against unwanted entry?