In the world of poker, the term straight flush is always one of the strongest hands a player can own. In Vietnam, where casinos and online games are growing rapidly, understanding the straight flush rule is essential to improve play skills and win. A straight flush is a hand consisting of five playing cards that have sequential rank and are of the same suit, e.g., 5-6-7-8-9 of clubs, diamonds, hearts, or spades. When playing Vietnamese poker, mastering the straight flush rule helps a player identify the hand’s value and make an appropriate betting decision. According to the straight flush rule, if several players have hands, the one with a higher straight flush wins the pot. Especially, straight flush ranks second only to a royal flush, which is little more than unveiling the five highest cards from ten to Ace. In Vietnam’s poker rules, understanding the straight flush rule will help you evaluate hands, optimize your strategy, play confidently, and win more often. Thus, mastering straight flush and straight flush rule is the key to improving your poker skills in Vietnam.