考察
kǎochá · HSK 4
make on-the-spot investigation
🔍 考察 = examine (考) + inspect (察); on-site investigation
考 carries the sense of testing or examining (as in 考试 exam), and 察 means to observe closely (as in 观察 observe). Together they mean fieldwork: going somewhere to inspect and study firsthand.
考 — old 老 (top) + 丂 phonetic
Originally written like 老 ('old'), 考 depicted an elderly person with long hair leaning on a cane, and the two characters were once interchangeable. Over time 考 specialized to mean 'deceased father' and later 'to examine, test, investigate,' with the bottom 丂 hinting at the sound.