4 sentences

1. 在古代，各国才子往往云集京都。

   zài gǔ​dài, gè guó cái​zǐ wǎng​wǎng yún​jí jīng​dū.

   In ancient times, talented people from various regions often gathered in the capital.

   Source: Dong Chinese Dictionary

2. 老北京的天桥曾是民间艺人云集的地方。

   lǎo Běi​jīng de Tiān​qiáo céng shì mín​jiān yì​rén yún​jí de dì​fang.

   Tianqiao in old Beijing used to be a gathering place for folk artists.

   Source: Dong Chinese Dictionary

3. 这里云集了来自世界各地的顶尖科学家。

   zhè​lǐ yún​jí le lái​zì shì​jiè gè dì de dǐng​jiān kē​xué​jiā.

   Top scientists from all over the world are gathered here.

   Source: Dong Chinese Dictionary

4. 这座城市自古以来就是一个商贾云集的海口。

   zhè zuò chéng​shì zì​gǔ​yǐ​lái jiù shì yī gè shāng​gǔ yún​jí de hǎi​kǒu.

   Since ancient times, this city has been a seaport where merchants gather.

   Source: Dong Chinese Dictionary