Section 1: Tomb Treasures Huge Empire The Han emperors ruled a huge land [click on map for larger view]. They set up a centralized government that followed the rules of the philosopher Confucius, who taught that moderation and good behavior are necessary for government officials—just as they are for everyday people. The Han empire had many enemies, however, and continued to build China's Great Wall to keep invaders out. The first Tang emperor, Li Yuan, later known as Gaozi, added lands to the empire. Under the Tang emperors, China has become known far and wide for its arts. The Chinese empire stretches across many lands. Because of this, we can control trade routes between other countries. Goods made by our people travel as far as the Roman Empire on the Mediterranean Sea, more than 7,000 miles away. How do they get there? Some of them travel across the great Central Asian deserts by camel. Because our lord was made wealthy through trade, we include a ceramic camel like this one in his grave.