Zi Collection, Page Position: Upper, Radical: Power (lì) Pronounced lei (falling tone) "Yu Pian" (Yù Piān) uses the characters "li" and "zhui" for pronunciation. "Lei Pian" (Lèi Piān) uses the characters "lun" and "zhui" for pronunciation, with the same pronunciation as "lei." "Yu Pian" explains it as a mother cow seeking its calf. "Lei Pian" states that this character is sometimes written in other forms. According to "Ji Yun" (Jí Yùn), this character is written as "lei." Additionally, "Zi Hui Bu" (Zì Huì Bǔ) provides the pronunciation as "lu" and "wei" (lǔ wěi qiè). In "Huai Nan Zi - Shi Ze Xun" (Huái Nán Zǐ · Shí Zé Xùn), there is a sentence: "Nai he 㹎 niú téng mǎ." The commentary explains that 㹎 niú refers to a bull. The pronunciation is the same as the character "lei" in "ge lei" (gě lěi).