In fast-secularising South Korea, Buddhism is regaining popularity thanks to a "hip" trend wooing Gen Z with festivals, fashion, robots and DJs, even as some fear for the fundamentals of the faith. Just down the street from a 14th-century Seoul temple where worshippers make offerings and bow at the feet of three giant golden Buddha statues, a store named Buddhz sells statuettes, prayer bead bracelets, hats and t-shirts. One depicts the Buddha scrolling on a smart phone.