This is probably one of the most famous Chinese love songs. It's called "The Moon Represents My Heart"
Ni wen wo ai ni yo duo sheng,
Wo ai ni you ji fen?
Wo de qing ye zheng, wo the ai ye zheng
Yue liang dai biao wo de xin.
You ask how deep is your love,
How much do I love you?
My feelings are real, my love is real,
The moon represents my heart.