It is easy to see the people with old blue clothes, a large basket and pedal army shoes in Bacheng streets every day, they are waiting in each station, market, high streets and back lanes year after year, waiting for someone to call "Hello, back pocket!", in the streets, loading and unloading goods, carrying goods back for the residents, to keep family. We call them "Beilaoer" or "Bei’erge"(back-carriers).

  The jurisdiction of Bazhong City is at the southern foot of Mount Micang in northeastern Sichuan Province.70 years before the traffic was blocked. The goods need to transport by human suffering, we call them "Beilaoer" or "Bei'erge" (back-carriers). 90 years later, Bei’erge mainly depended on short distance way. In the course of time, back brother became a special occupation. The back pocket of Back brother is full of characteristics, and the shape likes a large horn. When the back brother takes things, they must hold a similar crutch stick, the stick is called "Zhu", also can be called "club", a short rod is fixed in the stick, shaped like a "T".When they were tired, they can be placed the pestle in the back pocket as support. When the back brother needs to cross the river, pestle can probe the depth of water. Back pocket and Chu became the two indispensable signs of back brother.