Old Age Has Wisdom(1991)

Due to a very dry year, the khan ordered the entire young population to go in search of better places and leave the old people at home. All the old people were left to die and only one boy, risking his life, took his grandfather with him, hiding him in a large box. On the road, three times the wisdom of the old man helped everyone, and having learned that it was the old man who helped, the khan ordered his soldiers to take all the old men left behind with them...