来自MSN1 个月
Great Wall of China may be centuries older than previously thought
The Great Wall was built to secure ancient China’s northern borders against nomadic groups from the Eurasian Steppe. Historical records suggest the construction of the Unesco World Heritage ...
来自MSN1 个月
Great Wall of China Is Centuries Older Than Previously Thought
Dating back millennia and once spanning over 13,000 miles, the Great Wall of China is one of ... to deter invasion by nomadic groups from the Eurasian Steppe. It was previously believed that ...