In the series "Kung Fu" what did David Carradine's character have to catch or what act did he need to perform before he was allowed to leave?

Brainy Blonde

I found the following at www.shaolin.com A Shaolin Temple was where Cain or young Grasshopper studied. The primary obstacle that a disciple had to pass to attain the priesthood was the test for master rank. Actually a series of oral and practical exams, they culminated in the test of the tunnel. The candidate was lead to a corridor linked with the outside world. In the corridor were booby-traps, all lethal, all unpredictable. The disciple had to pass all of these, for there was no going back, no way out but to succeed. Most never even began the {journey;} few finished it. The adept who passed the traps faced one last {obstacle;} a several hundred pound urn filled with burning iron filings. On each side of the urn was an emblem, different for each temple, usually of a dragon and a tiger. The urn had to be moved with the bare forearms to unblock the exit. In so doing, the now priest was forever branded as a Sil Lum monk. Jun 27 01, 2:55 PM

django

When 'grasshopper' was able to snatch the pebble from his master's open palm it was time for him to leave. Jun 27 01, 7:50 PM