Please use my work/university email (and email only) for professional exchanges. Sorry, invitations and requests sent via social media will not be responded. If you don’t know my email, you can use the form below. Thank you.
If you prefer to send me an encrypted message, please use my PGP.
Your email will be responded as soon as possible. Normally within 3×24 hours. Sometime, when there’s a backlog, my response time would expand to 7×24 hours.