Pop Chinese:祝你一路顺风

zhù nǐ yí lù shùnfēnɡ.

祝 你 一 路 顺风

Wish you a pleasant journey

“shùn fēnɡ(顺风)”refers to things going well. “yí lù shùn fēnɡ(一路顺风)”means everything goes well on the way. So people often say it at the departure moment to express good wishes. 

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