文 wen2 文
房 fang2 房
四 si4 四
宝 bao3 寶
  1. Four Treasures of the Study, namely 筆|笔[bi3], 墨[mo4], 紙|纸[zhi3] and 硯|砚[yan4]
  2. the essentials of calligraphy and scholarship (idiom)

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