Dong Hongyu, 55-year-old, a ranger in Heilongjiang Yingchun Forestry Bureau, has been engaged in conservation for 22 years. This year, WWF nominated him as a candidate for IUCN Global Ranger Award, and Dong Hongyu won the Special Contribution Award of 2022 IUCN International Ranger Award. July 31 is the World Rangers' Day. WWF invited Dong Hongyu to share his stories about the tigers.