What are two red crescent-shaped things in Taiwan Province Province?

If this thing often appears in temples or sacrifices, it should be Jiaào bēI, ㄐㄧㄠㄅㄟˉ) or a shell, which is a tool for Chinese folk beliefs to seek instructions from the gods. In the ancient folk tradition, the world thinks that cups can communicate with gods. Originally, the clam threw the ball to the ground, depending on its pitching situation, whether it was good or bad. Later, bamboo or sawdust was used to make clam shells. Sometimes the name is called "Cup" or "Cup", "Cup School", "Cup Teaching", "Monument", "Qu", "Postscript Cup" and "Bo Cup".