很多人都见过古代的铜钱,中间是一个棱角分明的小小方孔,外延是一个团团的圆。秦始皇统一天下后,废除了战国时期混乱的币制,把“天圆地方”的宇宙观融于钱币之中,推行了圆形方孔铜钱——秦半两,从此铜钱作为一种货币在我国流通了2000余年,直至民国初期。今天的人们往往只看到了它的收 Many people have seen the ancient coins, the middle is a small angular square edges, the extension is a round circle. Qin Shi Huang unified the world, abolished the confusing currency during the Warring States Period, the “sky round place ” of the universe into the coins, the implementation of a circular square hole copper coins - Qin half, from the coin as a currency in our country Circulation for more than 2,000 years, until the early Republican period. Today's people often see it only