I usually receive many emails from scam journals asking me to publish my work there. And as I understand the scam is that they charge you a lot of money for that, and/or they steal your authors' rights.
But I recently got a different email (and a reminder) from Ms. Elsa Wang about a conference 9th Annual World Congress of Advanced Materials 2022 (WCAM-2022) in Tokyo, where I'm supposed to be an invited speaker/chair:
On behalf of committee and based upon your outstanding contribution in this field, we cordially welcome you to deliver a presentation as Speaker/Chair regarding your recent work [...]
The rest of the email is pretty well written, and the website claims to have important speakers who I recognize and have a pretty good CV. I guess this email is a kind of scam, but it's not clear to me how the scam would go.
So do you confirm this email is a scam? If so, where is the trap? (I guess all expenses are covered for invited speakers usually, no?)