LI KUN/FOR CHINA DAILY Siping has addressed challenges ... Siping also emphasizes its rich black soil culture. "We aim to tell Siping's story through its culture," Wang said.

The range of climates and environments across China pose distinct challenges ... soil types found in the country: saline soils in the north, black soils in the northeast, and red and yellow ...

Good chance of success' - Zhou's team developed their prototype bricks after analysing soil brought back by China's Chang'e-5 ... The resulting black bricks are three times stronger than standard ...