你是风儿我是沙风儿卷沙走天下
[nĭ shì fēng ér wŏ shì shā fēng ér juăn shā zŏu tiān xià]
'You are the wind, I am the sand; we travel the world' conveys companionship or unity with someone despite, or due to, differences (often referring to compatibility between partners). Wind and sand imagery implies wandering widely together with ease or inevitability.