☉ 疾风知劲草 【jífēnɡzhījìncǎo】
　　[ the force of the wind tests the strength of the grass only the toughest grass can stand the strongest wind the strength of character is tested in a crisis under strong winds one can know the strength of grass ] 比喻在危难时才能显出谁的意志坚强，是经得起考验的人。