2 sentences

1. 他是个精明的商人。

   tā shì gè jīng​míng de shāng​rén.

   He is a shrewd businessman.

   Source: Dong Chinese Dictionary

2. 他是一位精明的商人，在上海经营着一家公司。

   tā shì yī wèi jīng​míng de shāng​rén, zài Shàng​hǎi jīng​yíng zhe yī jiā gōng​sī.

   He is a shrewd businessman who runs a company in Shanghai.

   Source: Dong Chinese Dictionary