相助

to help one another / to come to sb's help

each other / one another / mutually / fret on the neck of a pipa 琵琶[pi2 pa5] (a fret on the soundboard is called a 品[pin3])

appearance / portrait / picture / government minister / (physics) phase / (literary) to appraise (esp. by scrutinizing physical features) / to read sb's fortune (by physiognomy, palmistry etc)

to help / to assist

to keep watch and defend one another (idiom, from Mencius); to join forces to defend against external aggressors / mutual help and protection

We are most grateful for your valuable assistance.

lit. to intervene when one sees an injustice (idiom) / fig. to rush to the rescue / to play the white knight

see 路見不平，拔刀相助|路见不平，拔刀相助[lu4 jian4 bu4 ping2 , ba2 dao1 xiang1 zhu4]