开交

开交	kāi jiāo	(used with negative) to conclude / (impossible) to end / (can't) finish
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
交	jiāo	to hand over; to deliver; to pay (money); to turn over / to make friends / (of lines) to intersect / variant of 跤