There are various names:. . . . . . It’s called Pearl Harbor, doesn’t it sound good? The ancients called very round pearls "walking pearls", but now people call them "fine round pearls". The ancients wrote a poem: "Big pearls and small pearls fall on the jade plate." To sum up, it can be called: Pearl Harbor, floating pearls, fine round pearls, and jade pearls. . . . . .