在HEROKU上创建API.使您所有的Oauth和对firebase的每个调用都通过API.由于强大的防火墙阻止了该API，因此它将仅桥接CHINA和GoogleServices(Firebase)之间的所有信息.

Create an API on HEROKU. Make all your Oauth and every call made for firebase go through the API. This API will only bridge all information between CHINA and GoogleServices (Firebase) since the great firewall blocks them.