The expo is coming. Everything is tighten up.
About few months ago, Shanghai started to check baggage at the entrance of major metro stations. The rule of whether a bag should be checked is not consistent.
I am wearing my black back bag all the time I enter metro. Most of the time, the security just ignore me, and allow me to enter without scanning, just like they treat the small hand bags ladies carry.
In other time, security asks me to put my bag into the scanning machine for security check. It is like this in most of the stations. The difference is, in bigger stations like Xujiahui, they tighten it, and in smaller stations like Jinxiu Road, they cover the big machines. Just two security guide using hand check.