I'm putting this here as, although not technically the fruit, it is from a fruit tree. We are looking at 桃胶 (táo jiāo), peach gum or peach tree gum. This is the sap of the tree and is used in Chinese sweet soups and desserts especially with silver ear fungus.
It arrives looking like the above. Around the size of a large raisin or larger and sticky but rock hard. These lumps require soaking overnight and then being boiled for 30 miutes before use.
Post soaking preboiling
They are considered to have numerous health benefits, but they say that about everything here. Not however, recommended for pregnant women or children under eight.
Much more information and recipes here.