单丝不成线，独木不成林

one strand does not make a thread, one tree does not make a forest (idiom)

surname Shan

bill / list / form / single / only / sole / odd number / CL:個|个[ge4]

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

no; not so / (bound form) not; un-

won't do / unable to / (at the end of a rhetorical question) can that be?

surname Cheng

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

variant of 線|线[xian4]

thread / string / wire / line / CL:條|条[tiao2],股[gu3],根[gen1] / (after a number) tier (unofficial ranking of a Chinese city)

alone / independent / single / sole / only

(bound form) tree / (bound form) wood / unresponsive; numb; wooden

a lone tree does not make a forest (idiom) / one cannot accomplish much on one's own

woods / forest / CL:片[pian4] / circle(s) (i.e. specific group of people) / a collection (of similar things)