Suppose The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, built along an east-to-west line across the northern borders of China. The wall was originally built as a defensive barrier against invasions from various nomadic groups. Construction of the wall began as early as the 7th century BC and continued through the Ming Dynasty.
Can we infer that "The Great Wall of China was built in a single year."? Yes, no, or maybe?