Pronounced du (falling tone) in Guangyun and zhi (falling tone) in Jiyun, same pronunciation as "zhao" (falling tone). Explained in "Shuowen Jiezi" as: to cover a bird so it cannot fly away. Examination: [Explained in "Shuowen" as: to cover a bird, making it unable to fly away.] Note: The original text does not contain the character "shi," which has now been removed.