Janus He appears selfless and compassionate but, in truth, is power-hungry, amoral, and without regard for the well-being of others. In the 1987 thriller novel "The Janus Man" by British novelist Raymond Harold Sawkins, Janus is used as a metaphor for a Soviet agent infiltrated into British Secret Intelligence Service - "The Janus Man who faces both East and West". 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
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