It could be because the walls were painted blue, a calm and peaceful colour.
那可能是因为房间的墙是蓝色的，一种平静而祥和的颜色。
If your room is painted blue, a calm and peaceful colour, it is good for your mind and body.
假如你的房间被涂成镇静平和的蓝色，这对你的身心将大有利益。
If your room is painted blue, a calm and peaceful colour, it is good for your mind and body.
假如你的房间被涂成镇静平和的蓝色，这对你的身心将大有利益。
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