HSK 5
一路顺风
yílù-shùnfēngto have a pleasant journey (idiom)
祝你一路顺风平安到家。
Zhù nǐ yí lù shùn fēng píng ān dào jiā.
Have a smooth journey and get home safely.
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New in the HSK 3.0 word list at level 5.