Word of Honor Season 1 Episode 36

Bei Yuan tells Ah’ Xu that Prince Jin was not after the armory, but after a secret left by his tribe about a place which would help the country’s occupants thrive well for a long time. The secret place was rumored to have a key belonging to six people with different surnames. Ah’ Xu’s father had tried to find its location along with his friend, Qin Huai Zhang.