Suppose The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China. Several walls were being built from as early as the 7th century BC, with the most famous being the walls built between 220–206 BC by the first Emperor of China, Qin Shi Huang.
Can we infer that "The Great Wall of China was built in a single year"? Yes, no, or maybe?