The great man was not afraid before because he knew that the place where the slaves were held was very hidden and that no foreigner could find it at all. Even if they were allowed to go in and search, they would not find any evidence.
So there is no particular worry in the hearts of the huge people, but it would be foolish to hear the other side say that someone in it has answered. It would be troublesome if the other side has found the Tibetan place.
If the captain and his men found the place where the slaves were held, the huge man could not run away...