shùn​fēng

bon voyage

顺风 (順風) shùn​fēng
bon voyage verb
an expression of good wishes for someone starting a journey

I wish you a smooth journey and a safe return.

tailwind verb
wind blowing in the same direction as the course of travel

The ship sailed at full speed with a following wind.

Frequency

Movie subtitles
3.07 per million appears in 1% of films
Written text
3.25 per million

Sources

Definitions
CC-CEDICT