洗手奉职

Explanation: Wash the hands clean, honest metaphor; Bong hold office staff. Metaphor of dedication, integrity. 　　Source: Tang and Han Yu, "less government supervision Tang Hu Lianggong so Zhongsantaifu Tomb Shinto monument" under construction for four years assistant minister for the degree of order about like Zhao, recommended the public to monitor the censor, the main feed to the bridge east of the Wei-Jun, Feng staff wash their hands, not money to a dummy. "