Conversation so far:
beginning in 1200 b.c.e. what new technology entered china
Chinese crossbows may have been invented as far back as 2000 BC, while the American historian Anne McCants at the MIT speculates that they existed around 1200 BC
what are the most notable inventions from china
The Four Great Inventions are inventions from ancient China that are celebrated in Chinese culture for their historical significance and as symbols of ancient China's advanced science and technology.

Question: what are the four
Self-contained rewrite: what are the four great inventions from ancient china