There are two methods for learning the days of the week in Chinese. One: this podcast. Two: personalized Chinese days of the week undies. Since the latter seem to be the one eighties fad that has yet to be resurrected, this podcast might be the easier way to get them in your head. And creates less laundry. Listen in and learn, it's as easy as 1, 2, 3... 4, 5, 6, 7.