3 sentences

1. 他特意回到了家乡汕头市朝阳区探望老同学。

   tā tè​yì huí​dào le jiā​xiāng Shàn​tóu Shì Cháo​yáng Qū tàn​wàng lǎo tóng​xué.

   He made a special trip back to his hometown in Chaoyang District, Shantou, to visit an old classmate.

   Source: Dong Chinese Dictionary

2. 长春市朝阳区的商业街区不仅繁华而且整洁。

   Cháng​chūn Shì Cháo​yáng Qū de shāng​yè jiē​qū bù​jǐn fán​huá ér​qiě zhěng​jié.

   The commercial area in the Chaoyang District of Changchun is not only bustling but also clean and orderly.

   Source: Dong Chinese Dictionary

3. 他在北京朝阳区的一家互联网公司担任经理。

   tā zài Běi​jīng Cháo​yáng Qū de yī jiā Hù​lián​wǎng gōng​sī dān​rèn jīng​lǐ.

   He serves as a manager at an internet company in Beijing's Chaoyang District.

   Source: Dong Chinese Dictionary