Digging up Okinawan Sweet Potatoes was the most difficult harvest I've encountered, it took hours and hours of work (3 mornings and 2 evenings to be exact) to harvest 10 lbs of spuds. The roots were thick and densely weaved together, most of the soil in the half barrels have been "consumed", I couldn't use a fork to lift the sweet potatoes, the containers were so heavy they cannot be turned over, and there was no way I can get to them without damaging the skins due to the way the spuds were grown. Take a look at how Okinawan Sweet Potatoes grow in a container:
Growing between the wall of the container and screen liner.
Growing into and around each other.
Growing vertically and horizontally.
Growing through the bottom of the lining screen. I scraped off the top part of the screen so you can see how dense and thick the roots were.
The horizontal big red swollen roots will become another spud if left to grow.
I didn't bothered to take pictures of the fresh jujubes (Chinese red dates) harvested this year due to out of town travels, but I found couple photos from 2008 to show you what they looked like before they were sundried. Fresh jujube is crunchy sweet, it can be eaten fresh or dry, Asians use this fruit to make jam, desserts, tea, and they can be used in baking, soups and stews etc.