4 sentences

1. 朱先生是我的中文老师。

   Zhū xiān​sheng shì wǒ de Zhōng​wén lǎo​shī.

   Mr. Zhu is my Chinese teacher.

   Source: Dong Chinese Dictionary

2. 朱老总亲临前线指挥战斗。

   Zhū lǎo​zǒng qīn​lín qián​xiàn zhǐ​huī zhàn​dòu.

   Commander Zhu went to the front lines to direct the battle.

   Source: Dong Chinese Dictionary

3. 他在白墙上刷了一层朱。

   tā zài bái qiáng shàng shuā le yī céng zhū.

   He applied a layer of vermilion to the white wall.

   Source: Dong Chinese Dictionary

4. 这种印泥中含有朱，所以颜色鲜艳。

   zhè zhǒng yìn​ní zhōng hán​yǒu zhū, suǒ​yǐ yán​sè xiān​yàn.

   This inkpad contains cinnabar, which gives it a vibrant color.

   Source: Dong Chinese Dictionary