profound feelings
It is a Chinese idiom. Pinyin is y ú Shu ǐ sh ē NQ í ng, which means that fish can't live without water. From the biography of Mr. Penglai.
The idiom comes from the biography of Mr. Penglai by Zhao Bi of Ming Dynasty: "the feeling of fish and water is extremely entertaining."
profound feelings
Light dust inhabits weak grass - qīng chén qī ruò cǎo