同行如敵國 (tung4 hong4 jyu4 dik6 gwok3) — to describe two people in the same industry are always like two countries in rivalry in Cantonese
tungˎ₄同hongˎ₄行jyuˎ₄如dikˍ₆敵gwok˗₃國简 同行如敌国
Mandarin Pinyin: tong2 hang2 ru2 di2 guo2
Meaning of 同行如敵國
nounto describe two people in the same industry are always like two countries in rivalry