fortify, prepare to defend against enemies or natural disasters

青金石: lazurite

key, important point / essential piece of something, requirement

the pin or rivet holding the spines of a folding fan together / (by extension) a pivot, cornerstone, keystone / a pin, often decorated, holding the handle to the tang of a katana

(archaic, possibly obsolete) the pin or rivet holding the spines of a folding fan together

(archaic, possibly obsolete) fortress, redoubt / (archaic, possibly obsolete) important point, key

need, necessity / essential

a female given name

便: flight / 敏: / 瓶, 壜: bottle / 鬢:

閩: Min