So Dong had no choice but to join the robbers, and the next night after the vessel got to Ki Yi, Sin Sum made him go with him on a looting expedition.
"I just want to show you how it is done," he said, "in case one of us gets sick or something, so you can take his place."
Then he led the way ashore and presently Dong found himself standing before a handsome building surrounded by a high wall. "This is the Viceroy's palace," said Sin Sum, "and I am going to steal the family jewels."
"But how will you get over the wall?" inquired the boy.
"Oh, that's easy," replied Sin Sum. "All I have to do is to fan a hole in it."
So taking out his fan he waved it three times and instantly part of the wall melted away. And then after they had passed through the gap he fanned another hole in the front door, and in a jiffy they were upstairs in the Viceroy's bedroom.
"Of course," said the robber, "when there is a porch I prefer to climb to the top of it as a second story man should, but when there is none I just fan my way in."
By this time he had fanned most of the bureau drawers open and in a moment more had found the family jewels. Then having found them, he fanned them also, and pish! they disappeared, case and all.
"Goodness," exclaimed Dong, "now you have done it. What did you dissolve them for?"
Sin Sum chuckled. "Wait till we get back to the boat and I'll show you."