Starting with Emperor Xiaowen of Han (more commonly "Emperor Wen"), every single Han emperor, except the first one of the Eastern Han Dynasty, has the character of "filial" (孝 xiào) at the beginning of his posthumous names. "Filial" is also used in the full posthumous names of virtually all emperors and empresses of the Tang, Song, Ming and Qing Dynasties. For Qing emperors, 孝 xiào is placed in various position in the string of characters, while those Qing empresses who were given posthumous names, 孝 xiào is always initial.