臣心如水

Explanation: Carefully clean water. Parable official clean. 　　Usage: The main predicate; as predicate; means clean, clear water heart 　　Source: Han Ban Gu "Han Chong Cheng Chuan": "the responsibility Chong said: 'The emperor's door, such as city people, why want to cut the main on the ban?' Sung answered: 'If Hill Gate City, Robinson heart like water. Would like to have test cover '. "