外籍
wàijí · HSK 7
foreign nationality
🛂 外籍 = 外 outside/foreign + 籍 registry/nationality = foreign nationality
外 means outside or foreign; 籍 is a registry of membership, the same 籍 in 国籍 (nationality). Together they mark someone whose nationality is registered outside this country.
外 — evening 夕 + divination 卜
Originally a compound of 夕 (evening) and 卜 (divination). Ancient Chinese divinations were performed in the morning; doing them at evening (夕) was considered irregular or 'outside' the norm. From this sense of deviation, 外 came to mean 'outside' or 'external'.