A Jewish man walked into a restaurant in Shanghai. Proud of the diasporic history of the Jews, he was eager to find out if there was any Jew in the great metropolis. He asked the waiter, "Do you have Chinese Jews here?"

The waiter, scratching his head, went inside the kitchen to enquire. He emerged 10 minutes later, "Sir, I have checked with our experienced Shanghaiese chef. There is no Chinese juice here."

"I simply can't believe there is no Chinese Jew in Shanghai! Are you sure?" the Jewish man pressed on.

The waiter, already exasperated, said, "Yes, sir. We serve apple juice and orange juice, but we do not have Chinese juice. If you like, we can serve you Chinese tea.'