你心比海还深比山还重
[nĭ xīn bĭ hăi hái shēn bĭ shān hái zhòng]
Translating this literally means 'Your heart is deeper than the ocean and heavier than mountains.' It describes the other person's profound and deep emotions that seem vast and overwhelming, possibly referring to someone with a mysterious and emotionally heavy personality or past. The speaker may feel they can't easily understand the depth of the person’s feelings or intentions.