Traditionally, being married typically meant living in the same house and city. However, a new study explores the rise of long-distance "commuter marriages" in China, driven by career aspirations or financial objectives. Couples in these arrangements often choose to live apart; while some may see each other once a week, others might only reunite during major holidays. What factors contribute to this trend, and is it sustainable? On the show: Niu Honglin, Ding Heng & Steve Hatherly.