Though you may find having your face pressed up against someone else's cheek a little unpleasant, think of the intimacy it affords. Once you have listened to this podcast, you will handily be able use your Mandarin Chinese on a crowded subway or bus to enquire of your newly proximate acquaintance what stop you are at. Extracting yourself from the cozy throngs-- now, that is not a Chinese lesson, that is an art.