Why does Chow Tai Fook Fuxing baby have a hole in his back?

Because it is hollow inside, all babies will have that air hole, which is a step of making.

Fuxing Baby is divided into four or five styles in the same series. The big hollow wings can move, and the hollow ones are thinner. The medium size is slightly thinner and stronger than the large size. Although the smallest is hollow, it will not be like the big one. So as not to damage the durability of jewelry.