"Tang Yun" (Tang Yun) reads "fu" (fu) with a true tone. "Ji Yun" (Ji Yun) and "Yun Hui" (Yun Hui) read "pi" (pi) with a "bin" (bin) tone, pronounced the same as "pin" (pin). "Shuo Wen Jie Zi" (Shuo Wen Jie Zi) states: 㰋, is a type of tree. "Ben Cao Bie Lu" (Ben Cao Bie Lu) records: Nai, also called pinpo (pinpo). "Cai Lan Za Zhi" (Cai Lan Za Zhi) says: In the Yan region, there is pinpo (pinpo), which, although bland in taste, emits a faint fragrance when placed by the pillow at night. This is the pinpo flower mentioned in Buddhist scriptures, representing longing. "Xue Pu Yu Shu" (Xue Pu Yu Shu) states: In the north, there is pinpo (pinpo), which is a variant of the species called "Hua Hong" (Hua Hong).