Ziziphus jujuba – Mill
Fruit Tree native to China, commonly consumed fruit in Asia and a very tough plant.
Li – Early ripening and best fresh eaten.
Lang – Dries on tree for winter storage – similar to figs 30% sugar when dry.
Resources and more information:
http://www.pfaf.org/user/Plant.aspx?LatinName=Ziziphus+jujuba