1, the circle at the bottom of watermelon, the smaller the better; On the contrary, the bigger the bottom ring, the thicker the skin and the worse the taste.

2, the color is best to choose turquoise, not foggy.

3, watermelon lines are neat, it is a good melon.

4, watermelon head, is the so-called pedicle, if it is straight, don't, but if it is curly, it is very sweet.