Suppose The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials. It was built across the historical northern borders of China to protect and consolidate territories of Chinese states and empires. The Great Wall stretches over approximately 13,171 miles from Shanhaiguan in the east to Lop Lake in the west.
Can we infer that "The Great Wall of China was built to protect the southern borders of China."? Yes, no, or maybe?