Hetalia: She's just shy

A Hetalia 4-koma about Vietnam. Just a try since no one has done it yet and I'm bored
As a Vietnamese, I think Vietnam is a tsundere. This comic was inspired by my English teacher's one-time-slip-off-the-tongue: "Vietnam opened its door once before, and got flooded with foreign countries' influence just to close it. And now the door just opens a little bit for a hand to come out asking for money." Well I don't think the quote makes sense, my English sucks