过勿惮改 (過勿憚改) guò wù dàn gǎi

guò wù dàn gǎi set phrase when you have faults, do not fear to correct them
Domain: Idiom 成语
Notes: Quote: idiom refined from 過則勿憚改 in Book 1 學而 Xue Er of the 論語 “Analects of Confucius” (retranslated from Legge 1861, vol. 1, Confucian Analects, p. 5; Guoyu '過勿憚改')