(bound form) far and remote places; wilds beyond the frontier; the farthest reaches of the world

(bound form) boundary; limit

(bound form) the number 100,000,000 (one hundred million); (archaic) ten quadrillion or other large powers of ten depending on the system

(bound form) used in Gaixia (垓下 gāi​xià), an ancient place name in present-day Anhui province, famous as the site where Xiang Yu was defeated