Located in the city of Guanghan in southwest China's Sichuan, the Sanxingdui ancient site is known as one of the greatest archaeological discoveries in the 20th century. Bronze masks and other sacrificial objects unearthed there have raised questions about the complexity and sophistication of civilizations in China dating back over 3000 years. CGTN's Meng Qingsheng and Nicole Ng take an in-depth look at the renowned archeological site as part of its special series “Dynamics of China”.