Google and Amazon s3 and other cloud storage in China can not be used. We are using qcloud COS and aliyun oss.
https://github.com/aliyun/aliyun-oss-php-sdk?spm=5176.doc32099.2.1.Rnh2kw
https://github.com/aliyun/aliyun-oss-php-sdk?spm=5176.doc32099.2.1.Rnh2kw