App Profile: Hero Battle Card-Reverse Card

There are two teams in the game: red and blue. You can choose 5 cards for each game. The system will randomly choose one card to release first. Each card has different numbers in four directions. If the number on the card we release is larger than the number on the adjacent opponent, the opponent's card will become our color. After 9 positions are filled, the side with more cards of the same color wins.
Game reminder: Choose a card with a larger number as much as possible. A can beat any number, while occupying the marginal position as much as possible.