This script help you to automatically say hi to your new follower in zhihu.com .

1. Run the sayhi.py by python3.5
2. If necessary, it will remind you to enter a captcha (It will generated a captcha.png in the project root path)
3. Input your email and password
4. Have fun~

Yes, I have run it on my server for some time. It seems very stable. You can follow my zhihu account nekocode for testing. And then you will recieve a message sends by this script.