This invitation is a respectful word, I hope you can come and I hope you can accept our invitation.

Sincerely, solemnly; respectfully, respectfully.

This, this, usually refers to the invitation letter.

Feng, to accept respectfully, is also a word of respect.

Invite, invite.

This word is usually used in the last sentence of the invitation letter to express a kind of respect for the invitee and hope to support him.