Ask Bike Hugger: Panniers Beijing

I have a question about cycling in beijing, a subject you clearly have experience with. I am about to move from Vancouver Canada to Beijing and I’m wondering if I should bring my bike pannier. Right now I have a pannier like this one. I use it daily here in Vancouver, and I plan to purchase a bike as soon as I get to Beijing next week, but I don’t know if it will fit on the racks there. I didn’t see many people using panniers there even though every bike is equipped with a rack on the back. Any idea? Thanks in advance, Monica