This is the "extremely deep underground" with a vertical rock cover thickness of 2400 meters!

This is the blackest house in the world!

In this "black" house deep underground in the middle of Jinping Mountain traffic tunnel in Liangshan Yi Autonomous Prefecture, Sichuan, with the slight flash of amplified atomic nuclear signal, researchers are looking for and catching by the non-stop running instruments.

This is China Jinping Underground Laboratory.

In the Jinping Mountain Tunnel near the Yalong River in Liangshan Prefecture, Sichuan Province, the construction of the second phase of China Jinping Underground Laboratory is progressing steadily. The project team has overcome the extreme challenge of "2400 meters underground" and built the most "pure" laboratory.Editor/Ma Xue