Chinese police officer Li Beijun answers questions from tourists in Plitvice Lakes National Park, Croatia, on July 26, 2018. The first joint patrol between Chinese and Croatian police during tourist season was launched on July 15. Six uniformed Chinese police officers will patrol with their Croatian counterparts in Zagreb, Dubrovnik and Plitvice Lakes National Park in Croatia until mid-August to help deal with Chinese tourists-related issues. (Xinhua/Kristina Stedul-Fabac)