解开

解开	jiě kāi	to untie / to undo / to solve (a mystery)
解	Xiè	surname Xie
解	jiě	to divide / to break up / to split / to separate / to dissolve / to solve / to melt / to remove / to untie / to loosen / to open / to emancipate / to explain / to understand / to know / a solution / a dissection
解	jiè	to transport under guard
解	xiè	acrobatic display (esp. on horseback) (old) / variant of 懈 and 邂 (old)
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