Combo photo taken by Liu Jieta on Oct. 15, 2017 (up) and April 25, 2018 shows a scenic spot in Huanglong scenic area, southwest China's Sichuan Province. Liu Jieta, 34, is a sanitation worker in Huanglong scenic area. He started to take photos and record life with his cell phones two years ago. His photos, mainly about picturesque scenes and people around him, are full of love of life. Since May of 2018, the administration of Huanglong scenic area has provided the sanitary workers here a professional training on photo-taking, in the hope that their photos will help people know about Huanglong and raise awareness of protecting environment. (Xinhua/Liu Jieta)