Literature Reference: 卷帘晓望云平槛，下榻宵吟月半窗。—— 《别慧山书堂》 Rolling up the blinds at dawn to see clouds level with the threshold, lying down at night to chant poetry with the moonlight filling half the window. Source from 'Bie Huishan Shutang'.
半: One half: a semicircle, half a century.
窗: The device for ventilating and airing a house.
Meaning: Half window symbolizes a peaceful and serene attitude towards life, representing inner tranquility and a close connection with nature.