Photo taken on July 11, 2019 shows tree bark carving work titled The Butterflies in Zoological and Botanical Garden of Changchun in Changchun, capital of northeast China's Jilin Province. More than 40 carving works made with tree barks and paintings created by Feng Shuxuan, an art designer working in the garden, are applied on the trees to cover the scars. (Xinhua/Wang Haofei)