2 sentences for 圆滑 (yuán​huá — tactful)

1. 他为人处世圆滑世故，深得老板的赏识。

   tā wéi​rén chǔ​shì yuán​huá shì​gu, shēn​dé lǎo​bǎn de shǎng​shí.

   He is sophisticated and worldly-wise in his conduct, which has earned him the boss's appreciation.

   Source: Dong Chinese Dictionary

2. 他为人处世非常圆滑，从不轻易得罪人。

   tā wéi​rén chǔ​shì fēi​cháng yuán​huá, cóng bù qīng​yì dé​zuì rén.

   He is very slippery in his dealings and never easily offends anyone.

   Source: Dong Chinese Dictionary