In the south, the favorite traditional filling is lotus seed paste, while northerners like everything from red bean and date paste to ham and nuts.

The seasonal round cakes traditionally have a sweet filling of lotus seed paste or red bean paste and often have one or more salted duck eggs in the center to represent the moon.

In full tailing paste filling slurry pumping looping pipe experiments, some other materials are usually added to improve the transportation parameters and the filling strength.