Albert Yu-Min Lin @exploreralbert is a Nat Geo Explorer, UCSD Research Scientist, Fellow of the Explorers Club, and co-founder of Tomnod Inc and planet3 Inc.
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Producer: Dan Morelle
Check out Treasures of British History by Peter & Dan Snow, out now!
Watch The Greatest Tomb On Earth: Secrets Of Ancient China on BBC Two at 8pm on Sunday 16 October or on iPlayer.