uu errand boy advantage is the commuting time is relatively free, generally according to their own situation to take orders, not subject to the limitations of the location, most of the time is their own bike in the delivery of a single, familiar with the local better to take orders, but the disadvantage is that the wages are not very stable, running a single on the wage, not run on no, and more hard, work every day for more than a dozen hours per month to earn a high income, in the The same is true for Zhangjiakou to do uu errand boy.

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