One early experiment, reported by the Chinese book Ten Thousand Infallible Arts of the Prince of Huai-Nan, was to blow out an egg and then push burning weeds inside it, so that the egg would fill with hot air. People said that the egg would then rise into the air, but this is probably not true. In any case, this project is a model showing the experiment.
Bibliography and further reading about Chinese science:
Science in Ancient China, by George Beshore (1998). .
The Joy of Pi, by David Blatner (1999). It’s not all about ancient China, but some of it is. For teenagers.
Ancient China: 2,000 Years of Mystery and Adventure to Unlock and Discover (Treasure Chest), by Chao-Hui Jenny Liu (1996). Lots of activities , including a Chinese calligraphy set.
Zero: The Biography of a Dangerous Idea, by Charles Seife and Matt Zimet (2000).