1, "Look" at the skin of Black Beauty Watermelon. If the skin is smooth and part of the surface is yellow, it means that this melon is a good melon. If the skin is gray and the surface of the melon has fuzz, it is a second melon.

2. "Touch" the melon skin with your thumb. If the melon skin is slippery and hard, it is a good melon. On the contrary, if the skin is sticky or soft, it is a second melon.

3. The lighter the weight of the hand, the higher the maturity of the watermelon. Generally speaking, the lighter the watermelon of the same size, the more mature it is, and the more overweight it is.

4. Drag the watermelon in your hand and pat it gently with your hand. If you "listen" to the crisp sound of the watermelon, it is a ripe melon. If there is a clicking sound, it is a raw melon.