相濡以沫

1. • (of fish) to moisten each other with spittle (when out of the water) (idiom)

     lit.

2. • to share meager resources and support each other in times of difficulty

     fig.

Character by character

• 相(xiāng)each other
• 濡(rú)moisten
• 以(yǐ)use
• 沫(mò)foam