Step through Zhongshan Gate (Small East Gate) of Xi'an City Wall and you'll feel like time-traveling! Built in the Ming Dynasty, this gateway brilliantly combines military defense with architectural elegance, standing as one of China's best-preserved ancient walls. Rent a bike to cycle along the 8.5-mile wall loop, capturing breathtaking contrasts between old-town bustle and modern skylines. At sunset, the russet bricks glow golden – every angle becomes an instant Instagram-worthy shot!