Chinese entomologist Zhao Li observes a wild stick insect in Dayaoshan state-level nature reserve in south China's Guangxi Zhuang Autonomous Region, July 31, 2018. Fifteen larvas of stick insects bred by the Insect Museum of West China were released to the wild on July 31. The Museum successfully bred a 64-cm-long stick insect, the largest insect in the world in 2017. (Xinhua)