There is no problem in the mobile wifi network environment, but when switching to the mobile 4G network, Qiniu pictures cannot be accessed. The returned content is: ERROR: ACCESS DENIED

There is no problem under the mobile wifi network environment, but when switching to the mobile 4G network, I cannot access Qiniu pictures. The returned content is: ERROR: ACCESS DENIEDThu, 27 Oct 2016 13:00:09 GMT (taikoo/BC34_yd-hunan-changsha-1 -cache-1)

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There is no problem under the mobile wifi network environment, but when switching to the mobile 4G network, I cannot access Qiniu pictures. The returned content is: ERROR: ACCESS DENIEDThu, 27 Oct 2016 13:00:09 GMT (taikoo/BC34_yd-hunan-changsha-1 -cache-1)