Pronounced kuai (falling tone) — "Guangyun" (Guangyun), Pronounced gu (falling tone) — "Jiyun" (Jiyun). Refers to a type of arrow bamboo. "Guangzhi" (Guangzhi) records: During the Wei dynasty, the Administrator of Hanzhong, Wang Tu, annually presented bamboo shoots in winter, called "jian gan" (jian gan), which were the shoots of "zong zhu" (zong zhu). "Dai Kai Zhi · Zhu Pu" (Dai Kai Zhi · Zhu Pu) records: "Zong zhu" (zong zhu) also belongs to the category of "jun zhu" (jun zhu), with dense and short bamboo nodes. The areas along the Yangtze and Han rivers call it "zhu jian" (zhu jian). This type of bamboo has deep roots, can withstand cold, and grows luxuriantly in gardens along the Qi River. Also, pronounced ku (falling tone) — "Guangyun" (Guangyun), Pronounced ku (falling tone) — "Jiyun" (Jiyun). The meaning is the same.