"Just look at the sea and don't care what's in the sea" means: just pay attention to the result of this matter, and don't go too far into how deep the water is. If it extends to emotional problems, it can be understood as: just like him, regardless of the other person's past experience.

"You just look at the sea, but you don't care what's in the sea" is a popular saying, which is used by many younger brothers and sisters as personal signatures to show their feelings, showing that they are very straightforward and simple to treat their feelings after 90 s and 00 s; A similar sentence is: "just look at the flowers, no matter what flowers are planted under my tree."