Ianuarius "Ianuarius" and "Februarius" were supposed to have been added by Numa Pompilius, the second king of Rome, originally at the end of the year. It is unclear when the Romans reset the course of the year so that January and February came first. "Ianuarius" is conventionally thought to have taken its name from Janus, the dual-faced god of beginnings, openings, passages, gates and doorways, but according to ancient Roman farmers' almanacs Juno was the tutelary deity of the month. Many Roman festivals and religious observances reflect the Romans' agrarian way of life in their early history. Agricultural calendars "(menologia rustica)"
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