一人一梦此心不二一人一城此生唯一
[yī rén yī mèng cĭ xīn bù èr yī rén yī chéng cĭ shēng wéi yī]
Emphasizes dedication and loyalty in relationships or ideals, implying having one sole partner for life, and choosing a single city to live in forever. It demonstrates commitment and constancy.