According to Japanese blogger Masahiro Miyazaki, who blogs under the name 'China Watcher,' there have been two recent terrorist bombings in China which took civilian lives.
The first, two weeks ago in Shanghai, killed at least twenty people on a public bus. The more recent bus bombing, on May 16, killed at least 16 people in Wzu as the Olympic torch approached the city.
Neither incident has been publicized widely in China. Miyazaki does not suspect Muslim terrorists. He hints at more China-based anti-government terrorists.