Here is another one

Thanks for the info. Good to know.

Here is another one that looks just like above. It is called CHE. The owner of that place told me it is originated from China. (I am surprised I didn't know that).
It is a very tasty fruit. Right now it is the time to pick them up.

http://www.ediblelandscaping.com/Plants/Che%20Fruit.htm
http://www.crfg.org/pubs/ff/che.html

There is another fruit called dogwood(not the flower). If you pay attention, you might find it in your city. The fruit season just passed. Next year, around September, look for something that look like Yang Mei. The mature trees are about 15-20ft tall and 15 ft spread. The fruits are edible.