I wonder how many kinds of Wan Wen are there?

Wan Wen's concept is quite broad, including many kinds of wood, bones, stones, metals and porcelain.

What you said, basically belongs to Wan Wen, and the threshold is very low.

Paper fan, birdcage, snuff bottle, singing gourd, pipe, stationery for study, etc.

Many things with practical value in tradition can be called Wan Wen, which pays more attention to higher appreciation besides long-term practicality.

One more thing:

The concept of "wenwan" itself also contains people's mentality and behavior, and does not simply refer to a specific thing.

For example, paper fans are used by many people to fan the wind and enjoy the cool. These people just use fans, not for fun.

But to a certain extent, it becomes a literary drama.

Another example is walnuts, which many people eat. These people just want to eat, not for fun.

But there are still a group of people who pursue literary play, not to eat.