Guangyun pronounces it as fu (falling tone); Jiyun pronounces it as fu (falling tone); the pronunciation is identical to fu (falling tone). The meaning is to dig the earth to create a cave for dwelling. Also, Jiyun pronounces it as fu (falling tone); the pronunciation is identical to fu (falling tone). Citing the Book of Odes (Shijing): "They fashioned caves, they fashioned burrows." Sometimes it is also written with the Earth radical. Also, pronounced as fu (rising tone); the pronunciation is identical to fu (rising tone). The Erya (Boya) explains it as a cave.