只要

zhǐ yào if only; so long as

功夫

gōng fu skill; art; kung fu; labor; effort

深

shēn deep; depth; deeply; (of a color) dark; deep; rich

shēn old variant of 深[shen1]

， 铁

tiě iron (metal); arms; weapons; hard; strong; violent; unshakeable; determined; close; tight (slang)

Tiě surname Tie

杵

chǔ pestle; to poke

磨

mó to rub; to grind; to polish; to sharpen; to wear down; to die out; to waste time; to pester; to insist

mò grindstone; to grind; to turn round

成

chéng to succeed; to finish; to complete; to accomplish; to become; to turn into; to be all right; OK!; one tenth

Chéng surname Cheng

针

zhēn variant of 針|针[zhen1], needle

zhēn needle; pin; injection; stitch; CL:根[gen1],支[zhi1]