Dark matter detection laboratory in SW China

What is dark matter? Most people get the intuitive understanding from science fictions. In the movie "Transformers", the spacecraft is driven by the dark matter for interstellar travels. In Science Fiction novel "Three-Body Problem", it refers to invisible wreckage of Solar System after it is attacked by the advanced alien civilization.

In the world's deepest dark matter detection laboratory - China Jinping underground laboratory, which is located deep underground in southern Sichuan. A group of Chinese scientists are looking for the dark matter, which only exists in theory, hoping to find out clues left by the so called "universe ghost "in science. (Xinhua/Shen Bohan)