居安思危

to think of danger in times of safety / to be vigilant in peacetime (idiom)

surname An

(bound form) calm; peaceful / to calm; to set at ease / safe; secure; in good health / content; satisfied (as in 安於|安于[an1 yu2]) / to place (sb) in a suitable position (job) / to install; to fix; to fit / to bring (a charge against sb) / to harbor (certain intentions) / ampere (abbr. for 安培[an1 pei2])

to think / to consider

surname Ju

(archaic) sentence-final particle expressing a doubting attitude

to reside / to be (in a certain position) / to store up / to be at a standstill / residence / house / restaurant / classifier for bedrooms

surname Wei

danger / to endanger / Taiwan pr. [wei2]