Daily Chinese Idiom Guessing Game
Not accustomed to the climate, food, or customs of a new place; to suffer from environmental change.
对于一个地方的气候条件或饮食习惯不能适应。
《三国志·吴志·周瑜传》不习水土，必生疾病。”《宋书·索虏传》道理来远，或不服水土，药自可疗。”
After moving to the desert, he experienced水土不服 and had trouble sleeping.