It turns out that my blog entry on wooden gongs is the first hit for a google search of Wooden Gongs. I never imagined that happening! More information about the Chinese wooden gong:
It is known as a “wooden fish” hence the fish carved at the top holding a pearl. It is called mùyú in Chinese. It is used in Buddhist ceremonies during the recitation of sutras and matras. Looking at how worn this one is, it must have had a lot of praying with it.