docs: version diff

Author: rehiy

README.md

@@ -1,6 +1,13 @@
 # TencentCloud DNSPod for `libdns`
 
-This package implements the [libdns](https://github.com/libdns/libdns) interfaces for the [TencentCloud DNSPod API](https://www.tencentcloud.com/zh/document/api/1157/49025) 
+This package implements the [libdns](https://github.com/libdns/libdns) interfaces for the [TencentCloud DNSPod API](https://www.tencentcloud.com/zh/document/api/1157/49025)
+
 ## Applying for Security Credentials
 
 To authenticate you need to supply a [TencentCloud API Key](https://console.tencentcloud.com/cam/capi).
+
+## Other instructions
+
+`rehiy/libdns-tencentcloud` is based on the new version of Tencentcloud api, uses secret Id and key as authentication methods, supports permission settings, and supports DNSPod international version.
+
+`libdns/dnspod` is based on the old version of dnspod.cn api, uses token as the authentication method, does not support permission settings, and does not support DNSPod international version.