Siberian tiger is one of the largest cats in the world. It originated in Northeast Asia and once spread all over Siberia, Russia and South Korea, with a history of 3 million years. Also known as Siberian tiger in China. Despite its huge size and amazing strength, the wild Siberian tiger is still on the verge of extinction, and the life and death of this rare species is only a line.

In 2009, Carlos A. Driscoll published a paper on the relationship between Li Haihu and Northeast Tiger. Genetic studies show that the Northeast Tiger and the extinct Li Haihu have the closest genetic relationship with other tiger subspecies. According to the survey, the ancestors of these two tigers probably went to Central Asia and the Caspian Sea to settle and reproduce through the ancient Silk Road in China about 10,000 years ago. And one of them, transsiberian, came to the present Far East, forming the present Siberian tiger population. It is speculated that human activities separated these tigers, which originally belonged to the same population but distributed in different regions, and finally put them on different evolutionary paths. This survey has aroused people's infinite reverie about the release of tigers in Central Asia. At the same time, the Amu Darya Delta, Ili River Delta and other places are also conducting habitat surveys. If the idea comes true, people will see tigers again on the ancient Silk Road.