1. Look at the color: If the appearance is bright green, it proves that the fruit is raw and not ripe. If the appearance is green with yellow edges, or the top cracked epidermis has turned black, this indicates that the fruit is ripe.

2. Touch: Gently press it with your hand. If it feels hard, it means it is not mature. If it is a little soft, sugar will flow out when you gently press it with your hand, which means it is ripe and can be eaten directly.