助弱抑强zhù ruò yì qiáng

fight for the weak against the strong; be in sympathy with the weak
❍ 瘦长个子，好饮酒，性躁，豪爽，正直，有骨气，喜～，惯打抱不平。(李六如《六十年的变迁》 Ⅰ —74) Tall and lean,he was a hot-tempered but straightforward man of noble character. He was always in sympathy with the weak and would take up the cudgels against injustice.