病來如山倒，病去如抽絲

sickness comes like a landslide, but goes slowly like spinning silk (idiom); expect to convalesce slowly

illness / CL:場|场[chang2] / disease / to fall ill / defect

to come / to arrive / to come round / ever since / next

as / as if / such as

mountain / hill / anything that resembles a mountain / CL:座[zuo4] / bundled straw in which silkworms spin cocoons / gable

to fall; to collapse; to lie horizontally / to fail; to go bankrupt / to overthrow / to change (trains or buses) / to move around / to resell at a profit

to invert; to place upside down or frontside back / to pour out / to tip out; to dump / inverted; upside down; reversed / to go backward / contrary to what one might expect; but; yet

to go / to go to (a place) / (of a time etc) last / just passed / to send / to remove / to get rid of / to reduce / to be apart from in space or time / to die (euphemism) / to play (a part) / (when used either before or after a verb) to go in order to do sth / (after a verb of motion indicates movement away from the speaker) / (used after certain verbs to indicate detachment or separation)

to draw out / to pull out from in between / to remove part of the whole / (of certain plants) to sprout or bud / to whip or thrash

to spin silk

silk / thread / trace / (cuisine) shreds or julienne strips / CL:條|条[tiao2] / classifier: a thread (of cloud, smoke etc), a bit, an iota, a hint (of sth) etc