Shen: Chen Mengchen
Fish: swim like a fish
Fall: Luo Chuchu
Wild Geese: Yan Qiu Ming
In September of 200x, the God of Destiny miraculously caused the four girls with very different personalities to meet and gather in Dormitory 510, Building B, Xiyuan, S University. They were surprised to find that each of them had a word in their name, which when added up, could be combined into an idiom: Morning Fish Luo Yan - Chen Yu Luo Yan. So they were narcissistic and gave themselves the nicknames "Shen, Yu, Luo, and Yan".
A sinking fish and a falling geese are as gentle as a swimming fish.