The Laosi ruins – known as China's Pompeii – are located in the Hunan Province and include ancient tombs, pavilions, streets, walls and stone sculptures -- more than 12,000 relics in all. Laosi represents the Culture of Yongshun Tusi Regime, which was a special system that ancient Chinese dynasties applied to rule ethnic groups in certain regions by granting hereditary titles to local leaders. [China.org.cn/Photo by Peng Biao]