The story happened in ancient times. A king was so clever that he thought of a good way to test  his men were reliable.

    One day, he had a huge rock(place) on a roadway at night. Then he hid  (him) nearby and watched carefully to see if anyone would remove the big rock. Some (wealth) businessmen and high officials came by, but they simply walked around it. Many of them even loudly blamed the king for not keeping the roads clear, but none of them would bother (get) the big stone out of the way.

    Then a villager came along carrying a load of vegetables. On (approach) the big rock, he stopped and laid down his burden, trying hard to move the stone to the side of the road. After much pushing, he(final) succeeded. As the villager picked up his load of vegetables, he noticed a purse lying in the road where the rock (be). The purse contained many gold coins and a note from the king, saying that the gold was for the personremoved the huge rock from the road.

    The villager learned a valuable lesson that many others would never understand: Every obstacle presents  opportunity to improve one's condition.