Yes, haida-edu.cn can receive emails.
No, haida-edu.cn is a throwaway domain and should be blocked.
You can use MailCheck's free API to automatically block throwaway emails. Read our documentation to get started. No registration required.
A record
None
MX records
mxbiz1.qq.com
184.105.206.87
mxbiz2.qq.com
184.105.206.87