Chinese historical records indicate that Lü Bu had a secret affair with one of Dong Zhuo's maids and he constantly feared that Dong Zhuo would find out. This was one of the reasons why he betrayed and assassinated Dong Zhuo in 192. The maid's name was not recorded in history, however. The name "Diaochan", which literally means "sable cicada", is believed to have been derived from the sable tails and jade decorations in the shape of cicadas which adorned the hats of high-ranking officials in the Eastern Han dynasty.