Update README.md

Author: qcgzxw

README.md

@@ -138,6 +138,9 @@ developer_chat_id=your_telegram_chat_id
 ![kindle](https://cdn.jsdelivr.net/gh/image-backup/qcgzxw-images@master/image/16344842508421634484250830.png)
 
 ## Donate
+
+<https://afdian.com/a/ebook-sender-bot>
+
 👉[Buy me a beer](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=M67JY6LTXNLB4&on0=donate&os0=Buy+Me+A+Beer)
 
 👉[Buy me a vps](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=M67JY6LTXNLB4&on0=donate&os0=Buy+Me+A+VPS)