Adam is in China. I am posting as his proxy. He says scroll to the bottom but if you have a hangover and some time just read the whole damn thing. Adams email is quoted below.
"I came across this while searching for bike stuff in Guangzhou since I’m spending a few weeks over here for work. I was going to post it but china blocks out some sites like facebook, youtube, and blogspot.com so I cant bring up the page while I’m here. In case you ever wanted to know how to pee while riding a bike, this site gives you instructions. Scroll to the bottom."