Sister-in-law (Suān ní) is one of the nine sons (one is five sons and the other is eight sons) born to the dragon in ancient Han myths and legends. Shaped like a lion, likes smoking and sits well, so the image usually appears on the incense burner, and then smokes.
Ancient books record that it is a beast that can eat tigers and leopards like a lion, and it also means beast. It often appears in Han Palace buildings, Buddhist statues and porcelain incense burners.