牵手说不走放手别回头
[qiān shŏu shuō bù zŏu fàng shŏu bié huí tóu]
'Qian Shou Shuo Bu Zou Fang Shou Bie Hui Tou' refers to not wanting to let go of someone's hand because once you separate, there’s no looking back; it's a metaphor for deep, unconditional commitment or regretful farewells. A very poignant description for a lasting relationship moment.