“Lin Huang” isn’t an attorney and he has no idea what your last name is.  He’s a scammer who is hoping you will get taken in by his story.  Then he will start asking you to send him money.  Ignore him.

My name is Lin Huang,an attorney at law. A deceased client of mine, that shares
the same last name as yours died as the result of a heart-related
I am contacting you to assist in distributing the money left behind by my
client(US$19 million dollars) which is lodged in the bank.Reply for more information.Thanks

Lin Huang