The lunar soil samples collected from the landing site contained fewer than 120 parts per million (ppm) water or 120 grams of water per tonne., while a light vesicular rock has 180 ppm. It makes it drier than rocks on Earth, according to research published on Saturday in the peer-reviewed journal Science Advances. READ MORE - https://www.thenexthint.com/china-discovers-water-on-the-moon/12461/