Chinese and Croatian police officers patrol together in Zagreb, capital of Croatia, on July 19, 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/Goran Stanzl)