In 2018, while taking photos in Gyirong county, Xizang, he documented a new mammal record for China, the Asiatic jackal. "While investigating Gyirong Valley, an animal resembling a fox suddenly appeared in the bushes," he said. "We were able to capture clear photos before it disappeared quickly. The images confirmed the existence of the animal in China."

Both discoveries were significant enough to be published in academic journals, with Dong listed as the first author.

Reflecting on his passion for wildlife photography, Dong explained that it is the vast realm of the unknown that captivates him.

"You might meticulously plan every detail of a trip, only to find yourself unable to capture your intended target, which can be quite disheartening," he said. "Yet, it's often in those moments of unexpected discovery or unforeseen adventure that you find a surprising and profound joy.

"You will definitely not come away empty-handed. You are sure to harvest something. The unpredictability is fascinating."