Cordyceps pickers scan the ground on a mountain to find Ophiocordyceps sinensis, a fungus believed to possess aphrodisiac and medicinal powers, in the Amne Machin range in China's western Qinghai province, June 8, 2019. Demand for the highly prized cordyceps has increased sharply in the last decade as an emerging Chinese middle class seeks it to cure everything from kidney disorders to impotence. REUTERS/Aly Song SEARCH "CHINA FUNGUS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.