Huaiyi

Huaiyi (懷義) (died December 25, 694), né Feng Xiaobao (馮小寶), sometimes referred to as Xue Huaiyi (薛懷義), was a Buddhist monk who was known for being the lover of Wu Zetian, the only woman to be commonly recognized as "emperor" in the history of China.

Read more about Huaiyi:  Background, As Wu Zetian's Lover, Death