2 sentences for 正道 (zhèng​dào — right path)

1. 办事要走正道，不能靠走小道。

   bàn​shì yào zǒu zhèng​dào, bù néng kào zǒu xiǎo​dào.

   One should do things through the proper channels instead of taking underhanded paths.

   Source: Dong Chinese Dictionary

2. 年轻人应该走正道，不要误入歧途。

   nián​qīng​rén yīng​gāi zǒu zhèng​dào, bù yào wù​rù qí​tú.

   Young people should follow the right path and not go astray.

   Source: Dong Chinese Dictionary