开襟

开襟	kāi jīn	buttoned Chinese tunic / unbuttoned (to cool down)
开	kāi	to open (transitive or intransitive) / (of ships, vehicles, troops etc) to start / to turn on; to put in operation; to operate; to run / to boil / to write out (a prescription, check, invoice etc) / (directional complement) away; off / carat (gold) / abbr. for Kelvin, 开尔文 / abbr. for 开本, book format
襟	jīn	lapel / overlap of Chinese gown / fig. bosom (the seat of emotions) / to cherish (ambition, desires, honorable intentions etc) in one's bosom