Two brothers from Beijing have carved out an unusual career - making musical instruments from carrots, potatoes and other vegetables. Nan Weidong and Nan Weiping have been making playable flutes with everything from leeks to carrots. Frequent projects see them using a sweet potato as an ocarina, a bamboo shoot as a flute, and a yam might become a whistle. The pair make a living from their instruments which have seen them appear on Chinese talent shows and other high-profile performances, which pay up to $8,000 a time. Each does however, require a new set of instruments, as the vegetables...