改弦易轍 (goi2 jin4 jik6 cit3) — changes one's way of doing things or one's attitude in Cantonese
goiˊ²改jinˎ₄弦jikˍ₆易cit˗₃轍简 改弦易辙
Mandarin Pinyin: gai3 xian2 yi4 zhe2 (PRC) che4 (TW)
Meaning of 改弦易轍
nounchanges one's way of doing things or one's attitude