China Finds: can tech revive ancient Liangzhu?

Liangzhu offers rare evidence of early state formation in China, and safeguarding a 5,000-year-old civilization means more than preserving artifacts. The next generation also needs to feel what life was like then, so experts are using drone light shows and virtual reality in creative and careful ways. The real challenge is protecting the past while making it discoverable. On the show: Steve, Fei Fei, Yushan.