The ghost of the stone devours the insides of the rock, and the master has to split it open to find out what the source is. The red flame source is a rare variety of the same plant, but it is not as common as the red flame. The master asks for the price of the source, which is equivalent to ten kilograms of the plant. The stone is a watermelon rock, which means that the beginner will have to buy one pound of the pure source for every ten pounds of the original rock. The beginner will be able to find only a few seeds, but he will lose all of his money. He will need to buy the stone with a pound of pure source. The source is so pure that the master can count the number of seeds inside the stone. He compares the stone to an ancient taichu source stone, which contains many seeds. He says that the stone is too young to be an ancient insect, but the master will remember this.