宝宝你是我的最爱贝贝你是我的心爱
[băo băo nĭ shì wŏ de zuì ài bèi bèi nĭ shì wŏ de xīn ài]
Both “baby” (宝宝) and '宝贝' mean dearest people here in Chinese. So this nickname conveys 'Baby You're My Absolute Darling' and intends to convey affectionate emotions towards someone special using endearing pet terms repeatedly.