欺软怕硬 bully: to threaten to hurt someone or frighten them, especially someone smaller or weaker 顽固不化 stubborn: determined not to change your mind, even when people think you are being unreasonable

顽固不化 = obstinate/recalcitrant/unrepentent 欺软怕硬 = 欺善怕惡 = bully

Thank you, fenton!

欺软怕硬 = Behave as a bully towards the weak and act as a coward before the strong.