1, depending on the fruit type. Mature red-hearted kiwifruit is full in shape, uniform in color and undamaged locally. If you look at wrinkled skin, it means it's overcooked. Don't buy it.

2. Pinch the fruit with your hands. Mature kiwi fruit with red hearts is hard but not particularly hard when pinched by hand. If it is particularly hard or soft, it is not suitable for purchase, especially the soft fruits are almost overcooked, and some may not be eaten.

3. Look at the size of the fruit. Mature red-hearted kiwifruit is not very big in appearance, and generally 80- 120g is suitable. If it is very big or small, it is not suitable for buying.

4. smell it. Mature kiwifruit with red hearts smells good, but if it smells like wine, don't buy it. It's too ripe to eat.