Current documentation for Oauth for CN is as follows the urls should be
www.battlenet.com.cn/oauth/authorize
www.battlenet.com.cn/oauth/token
try these and you should get a better result
Current documentation for Oauth for CN is as follows the urls should be
www.battlenet.com.cn/oauth/authorize
www.battlenet.com.cn/oauth/token
try these and you should get a better result