A typewriter with a full Chinese Hanzi character set would have too many keys to be practical.
However, by combining the Chinese convention for naming children with any character, with the (more recent) cultural predeliction toward communal exercise, I propose the Earthquake Typewriter:
area is marked out with 1 metre squares, each marked with one of the Chinese characters and fitted with a pressure sensor. All the sensors are coupled to a receiver.
On each square stands a child whose name matches that square's character.
The operator simply speaks (probably through a loudhailer) and when a child hears their name, they jump, triggering the sensor and sending a signal to the receiver to print the character.
At fast typing speed, earth tremors may become an issue.
Among the other issues to be addressed is the inequitable usage of characters. While a child with a very commonly used name may expire through exhaustion, another with a seldom used name may suffer from the sedentary nature of their day.