Fuji: Fuji should pick the kind of look a trace, yellow in red, so that the general loam is yellow, and crisp and sweet and a little bit of acid, taste is very positive. Never pick a little red in the green, so that the general taste is a little bland, water may also be quite a lot, but the sweetness must not. Authentic red Fuji apples on the table are crooked, no positive, or certainly not authentic, the color can not be particularly red, some strawberry pink, and not red into a piece, to pick the kind of many red silk, and “navel” to sink deep, so that sweet. The ones with a lot of pockmarks on the skin, and those with a crisp echo when you play them with your fingers, are sweet and crisp. When buying apples (mainly red Fuji), it is best to choose the ones that are red in appearance (called “strip red”) and have some yellow inside the red. That kind of apple is crisp, juicy, and very sweet. Watermelon, cantaloupe, melon: pick watermelon: 1, pick the pattern of the melon feels like propped up; 2, the tail of the flowering place closed small; 3, “navel” concave into the touch the surface of the melon is not smooth, but bumpy; 4, the melon color is darker green luster, with a hand to hold up, gently pat, listen to the sound The watermelon is sandy and not tight inside. Melon: 1, melon small, melon big head part without umbilicus, but a little green, this is the first leaf of a melon bear, better pick, because the long small. 2, the umbilical cord, the larger the umbilical cord the better, press the umbilical cord part of the softer. Smell the butt of the melon, the fragrance is good and sweet good melon. Cantaloupe melon: pick the thick and dense net pattern, smell the stronger aroma. Note that when you buy any melon, the end that is not connected to the seedling is concave is ripe, good and sweet. First, the circle at the bottom of the watermelon, the smaller the better, on the contrary, the larger the circle at the bottom, the thicker the skin, the harder to eat; second, the head of the watermelon, the so-called tip, if it is a straight line, do not, but if it is curled up in a circle, it is very sweet; third, the watermelon pattern is neat is good melon; fourth, the best color to pick lime green, not foggy white white.