Popping the emergency exit door is now officially a trend on Chinese airlines, considering how often it has happened recently. Just this week a deranged passenger on a Changsha to Hohhot flight attempted to do it in flight, and was luckily restrained by crew and others on board. Here's my question: where is the cabin staff when this is going on? An exit door isn't easy to open, and the plane is on the ground. Why aren't flight attendants preventing this? I'm not even sure I want to hear the answer.