Niu bike not good
I buy niu N1S sport bike but every time it’s stop in middle, the owner come to check bike he fix some wire but again same problem, my bike stop in middle for 5times I only ride 200km , very bad bike 我买了牛N1S的运动自行车,但每次它停在中间,车主来检查自行车,他修好了一些电线,但同样的问题,我的自行车停在中间5次 我只骑了200公里,自行车很差