Bicycle delivery in Shenzhen

In Shenzhen, it seems most small commerce is handled via bicycle.  5 gallon bottles for water coolers, 40 lb propane cylinders, and all manner of materials and supplies are delivered by bike or scooter. 

Food is also delivered in this manner.  The popular fast food places all deliver.  Yes you can call the Colonel and in a few minutes have a bucket o' finger linckin' good!  McDonalds delivers also...

One night during my last trip to China, I was at the bar and had a taste for a caipirinha.  The bar had no limes, no call for them I guess.  However, one phone call from the bartender and 5 minutes later, a young Chinese girl on a bicycle arrived with a small bag of limes and a case of other bottled goods. 

Recycling is handled in the same manner...