What do you mean, the heart is as deep as the sea?

Interpretation: the mind is heavy, like the sea, which makes people unpredictable, meaning that a person is very shrewd. Metaphor is difficult to guess the profound intention.

Pronunciation:? xīn？ Live without dying.

Make sentences:

His heart is as deep as the sea, and people can't guess his thoughts.

Is he also a bold and cautious person with a heart like the sea?

Sometimes his heart is as deep as the sea, and sometimes he is as naive as a child.

Rivers and lakes are in troubled times, and love and hate are intertwined. This woman's face is like a peach blossom and her heart is like the sea.

There is a kind of love as deep as love, and there is a kind of hate as deep as the sea.