The Giant Rice Turtles

I've been to Quanzhou twice, but never knew that they have this interesting custom. Supposedly, these "good luck rice turtles" (平安米龟) are constructed for the ''Yuanxiao'' festival (元宵), which is celebrated 2 weeks after the Chinese New Year, or (usually) about 2 weeks before the Orthodox Christian Fat Tuesday (Maslenitsa).