I need some packing supplies to send out books by courier. Anyone have a suggestion where to buy padded envelopes, bubble wrap, small shipping envelopes and other shipping supplies? LuoSiWan maybe? What floor? Help!

I'm also looking for some big padded envelopes. I went to a post office, but I couldn't find any. Help! I want to send some Christmas gifts home.

The post office sells overpriced crap. Try to ask courrier companies like shentong, yuantong etc...