lit. (of fish) to moisten each other with spittle (when water is drying up) (idiom) / fig. to share meager resources / mutual help in humble circumstances
相濡以沫
xiāng rú - yǐ mò
lit. (of fish) to moisten each other with spittle (when out of the water) (idiom) / fig. to share meager resources and support each other in times of difficulty