B??c 3: H? th?ng s? cung c?p cho b?n m?t cú pháp tin nh?n ho?c mã QR ?? b?n so?n tin nh?n và g?i ??n s? nhà m?ng ?ã ch? ??nh. The revolver mechanic makes sure you’ll only at any time have six bullets loaded in the best possible state of affairs.