Update：for some reason，Ali cloud is no longer recommended updates the source，Give youThis page，Click to go can help you generate USTC mirror automatically depending on the version update source。
In order to facilitate their own domestic vps server configuration updates，Usually all you need to change and update the source dns，Do not try to patch ............ otherwise life short，NetEase previously used source but recently always cramp，So nowRecommended Ali cloud。
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