铅笔写不出爱橡皮擦不掉心
[qiān bĭ xiĕ bù chū ài xiàng pí cā bù diào xīn]
"Love can't be written by pencil and heart can't be erased by eraser" suggests a belief that love or emotional attachment cannot be expressed through temporary means, nor can they be easily erased from one's heart; love leaves permanent marks beyond physical actions.