Just put it in a bag

What is up with the Chinese habit of putting everything in a bag? I remember once when I was a child, my mom put fried rice in a ziploc for me and I was horrified. Well, this is like that, but much worse. 

Oh, you're done with dinner but you can't seem to finish that soup? Where is the cylinder container that you're used to carrying your soup in? NOT here. 

Dump it in a bag. Afraid it will leak? Double bag.  You must be wondering...what sort of bag? Surely they must use a special soup bag. NOPE, just a regular grocery plastic bag. OH ZHONG GUO.