Until later in the game, when you know more precisely which cards you need to complete your melds, it might be advantageous to hold onto your wild cards. You can improve your chan50 bonus dragon vs tigerces of forming strong sets and runs and eventually having a winning hand by strategically using wild cards when the time is right. Also, you should think about how using wild cards might affect your melds & overall strategy. It's crucial to carefully evaluate when and how to use wild cards because doing so may create new opportunities for meld formation.