A mythological tale about eight immortals who each used their own unique magic to cross the ocean without a boat; used as a metaphor for everyone using their own distinct talents or methods to achieve a common goal. Often used as part of the phrase 八仙过海，各显神通 bā​xiān​guò​hǎi​gè​xiǎn​shén​tōng

Each person reveals their own unique talents or special powers. This is often an abbreviation for the idiom 八仙过海， 各显神通 bā​xiān​guò​hǎi​gè​xiǎn​shén​tōng.