The transcript discusses a proposal to use cosmic rays to explore the Terracotta Army burial site in China. The site, guarded for 2000 years, is believed to contain a chamber surrounded by rivers of mercury. The proposal suggests using muon detectors to map the hidden areas, a technique previously used in the Great Pyramid of Giza. Historical intrigue and cultural references, such as movies, add to the site's mystery.

What historical accounts are mentioned regarding the burial chamber?

What previous discovery is referenced in relation to the proposed technique for revealing the burial chamber?