Originally Posted by
mntblue
How would this work? You do not need to show ID to leave US. If you show Chinese passport to leave China you have to have a valid visa on it.
Show US passport to the airline and Chinese passport to the officials. I have a friend who does this drill ~10x per year, though with a HK ID (instead of a PRC passport). One time, an official caught a glimpse of his US passport, and deported him to HK immediately. He returned the next day, but told me it wasn't a pleasant experience.