Nanjing Ming City wall may open to public in the coming year.

The City Wall of Nanjing was designed by Emperor Zhu Yuanzhang after he founded the Ming Tomb and established Nanjing as the capital 600 years ago. To consolidate his sovereignty and keep out invaders, he adopted the suggestions of advisor Zhu Sheng to build a higher city wall, to collect grains and to postpone the coronation. Then, he started to build the city wall. It took 21 years to complete, and used 200,000 laborers to move 7 million cubic metres of earth. The City Wall of Nanjing was among the largest city walls ever constructed in China.