Janus Janus In ancient Roman religion and myth, Janus (; ("Iānus"), ) is the god of beginnings, gates, transitions, time, duality, doorways, passages, and endings. He is usually depicted as having two faces, since he looks to the future and to the past. It is conventionally thought that the month of January is named for Janus (Ianuarius), but according to ancient Roman farmers' almanacs Juno was the tutelary deity of the month. Janus presided over the beginning and ending of conflict, and hence war and peace. The gates of a building in Rome named after him (not a temple, as it
History of construction List of Ancient Greek and Roman roofs). China is a cultural hearth area of eastern Asia, many Far East building methods and styles evolved from China. A famous example of Chinese construction is the Great Wall of China built between the 7th and 2nd centuries BC. The Great Wall was built with rammed earth, stones, and wood and later bricks and tiles with lime mortar. Wooden gates blocked passageways. The oldest archaeological examples of mortise and tenon type woodworking joints were found in China dating to about 5000 BC. The Yingzao Fashi is the oldest complete technical manual on Chinese