To correct the structure or brushstrokes of a wrongly written character to make it follow standard rules.
standard character form
The standardized or regular form of a character; also used to refer to standard script in calligraphy.
the character 'zheng'
The character 正zhèng, which is commonly used for counting in groups of five because it has exactly five strokes.
Zhengzi official
(literary) An ancient government official responsible for proofreading and correcting texts, a post established during the Northern Qi and continued through the Tang Dynasty.