“中国是世界文明古国之一。古代我国的文化水平和生产技术,在亚洲乃至世界上是领先的。邻国如日本、朝鲜等,都派使者和学者来中国,学习和引进中国的文化技术。在经济领域内,也是如此。‘孔方兄’—中国铜钱的别称,随着经济文化的交往,先后流传至日本、朝鲜、安南等地,并‘繁衍子孙’,产生了日本、朝鲜、安南的方孔圆钱。这 ”China is one of the ancient civilizations in the world, and in ancient times China’s cultural level and production technology were leading in Asia and the world, with neighboring countries such as Japan and North Korea sending ambassadors and scholars to China to learn and introduce Chinese culture Technology. "In the economic field, too. ’Kong Fangxiong - another name for Chinese coins, with the economic and cultural exchanges, has spread to Japan, North Korea, Annan and other places, and’ multiply offspring ’, resulting in Japan, North Korea, Annam The square hole round money