Question: What show, whose  cast of celebrities travel to less-habitated, natural places to survive on their own and experience life with local tribes and people, helped make Kim Sung-won a household name?
Sentence (from "Uxii"): Some think that the tolling was a gift tradition from the Persian kings to local tribes, and wasn't forced (especially as the need for Darius to go out of his way to pay the "toll".
Relevant evidence: No