晋代王延事奉双亲极为孝顺，夏天先将枕席扇凉，冬天先以身体温暖被，再请父母入睡。典出晋书・卷八十八・孝友传・王延传。后比喻事亲至孝。亦作“扇枕温衾”。
英语 fan one's parents' pillow in summer and warm their quilt with one's body in winter
