University of Hong Kong professors John Lin, Olivier Ottevaere and Lidia Ratoi have worked with students to overhaul an underground house in northern China, suggesting a new future for these traditional dwellings. Underground House of the Future is a complete rebuild of a house in Zhangbian Township, a village in the Loess Plateau in Henan Province, where people traditionally dig their homes out of the earth. Their revamped version features complex brick vaults, 3D-printed terraces and a