gèng wěn de biǎo dá shì qīng míng ān kāng lù shàng zhù yì ān quán bǎo zhòng

更稳的表达是“清明安康”“路上注意安全”“保重”。

A more stable expression is 'May you be healthy and safe during Qingming', 'Be careful on the way', 'Take care'.