Do not carry your worries here simply because will keep you from from implementing the play.
This is the game where you are given two cards and you have choose whether or even otherwise to get a third one to get as close as you can to 21 without talking about it. https://tingamegenz.com/giai-tri/cong-game-rikvip-san-choi-dang-de-trai-nghiem/23530