溺海不止终老深鱼不泪安眠
[nì hăi bù zhĭ zhōng lăo shēn yú bù lèi ān mián]
Immersed In The Sea Never Ends, Old Fish In Deep Waters Sleep Without Tears: A poetic way of expressing profound sadness submerged beneath calm exterior appearances—a sense of inner peace after experiencing much turmoil.