306 bc meaning in Chinese

前306年

The most age - old wall in the history of china , which was built in 306 bc . this earth - rammed section of the great wall winds on the high ranges of the mountains over 200 kilometres . the current height of the wall is between 1 - 3 metres
宁夏境内的战国秦长城是中国历史上最古老的长城，始建于公元前306年，这段蜿蜒200多公里的长城依山就势，以土夯筑，现存高度在13米之间。
The great wall of the warring states period and qin dynasty within ningxia is the most age - old wall in the history of china , which was built in 306 bc . this earth - rammed section of the great wall winds on the high ranges of the mountains over 200 kilometres
宁夏境内的战国秦长城是中国历史上最古老的长城，始建于公元前306年，这段蜿蜒200多公里的长城依山就势，以土夯筑，现存高度在13米之间。