He said, "I want to showcase the beautiful and dynamic moments of wildlife, to not only record their living conditions but also to express the importance of loving and protecting wild animals and their habitats. I also aim to present the abundant biological resources of species as well as the achievements of wildlife protection in China through my images."

In 2016, Xie joined forces with Chen Jianwei to launch the "Nature Image China" project. This initiative is committed to recording and preserving the natural beauty of China while promoting its rich natural image culture to the world. So far, the project has organized 30 photography events, hosted over 100 photo exhibitions at home and abroad, and exhibited over 7,000 photographic works.