Also an antiquated reference to giving you a very bad beating administered by anyone, upon anyone, but once particularly common in reference to domestic violence.
In addition to being one of many sexual references in The 30's classic Minnie the Moocher, this is also a reference to a bad beating.
"I ever catch you here again, I'm going to take you down to Chinatown."
Verb: To thrust a phallic shaped object penis or otherwise, into the anal cavity or vaginal cavity of an Asian woman, specifically one of Chinese decent. This must be done with complete disregard for the well being of the recipient.
*Watching a porno* Come on Nigga, dig to China nigga, dig to China she got it up in there! China travel