Yunnan, China, famed for its breathtaking landscapes and rich biodiversity, now draws crowds for another reason: wild mushrooms. Over 900 species grow here, fueling a tourist-driven mushroom gold rush. But as baskets fill—when does foraging tip into overharvesting? The tourists are feasting on fungi, but nature is paying the price. / A game that does not exist, but everyone's playing (20:48). On the show: Heyang, Steve Hatherly & Yushun