4 sentences

1. 中越两国山水相连，贸易往来频繁。

   Zhōng Yuè liǎng guó shān​shuǐ xiāng​lián, mào​yì wǎng​lái pín​fán.

   China and Vietnam are neighbors with shared borders and frequent trade.

   Source: Dong Chinese Dictionary

2. 这两栋大楼通过三层的玻璃天桥相连。

   zhè liǎng dòng dà​lóu tōng​guò sān céng de bō​li tiān​qiáo xiāng​lián.

   The two buildings are connected by a glass skybridge on the third floor.

   Source: Dong Chinese Dictionary

3. 这两个重要的节日紧紧相连，大家都感到很高兴。

   zhè liǎng gè zhòng​yào de jié​rì jǐn​jǐn xiāng​lián, dà​jiā dōu gǎn​dào hěn gāo​xìng.

   These two important festivals follow closely one after another, and everyone is very happy.

   Source: Dong Chinese Dictionary

4. 我们的命运紧紧相连。

   wǒ​men de mìng​yùn jǐn​jǐn xiāng​lián.

   Our fates are closely linked.

   Source: Dong Chinese Dictionary