宁折不弯[nìng zhé bù wān]
词典adamant：坚定不移的；坚决的；坚硬无比的；牢不可破的。
词典would rather break than bend：宁折不弯。
would rather break than bend; adamant
1. Straight arrow：Slap-happy 高兴得晕头转向 | Straight arrow 宁折不弯 | like clockwork 精确地;有规律地