6 sentences

1. 敬启者，兹收到您的来信。

   jìng qǐ zhě, zī shōu​dào nín de lái​xìn.

   To whom it may concern: I have received your letter.

   Source: Dong Chinese Dictionary

2. 启奏皇上，臣有本奏。

   qǐ zòu huáng​shang, chén yǒu běn zòu.

   Your Majesty, I have a petition to present.

   Source: Dong Chinese Dictionary

3. 启禀大人，属下已经查明了此事的真相。

   qǐ bǐng dà​ren, shǔ​xià yǐ​jīng chá​míng le cǐ shì de zhēn​xiàng.

   I beg to report, Your Honor, that I have uncovered the truth of the matter.

   Source: Dong Chinese Dictionary

4. 他启开了密闭的箱子。

   tā qǐ kāi le mì​bì de xiāng​zi.

   He opened the sealed box.

   Source: Dong Chinese Dictionary

5. 老师的一番教诲，极具启人心智的力量。

   lǎo​shī de yī fān jiào​huì, jí jù qǐ rén xīn​zhì de lì​liang.

   The teacher's teachings have a powerful enlightening effect on the mind.

   Source: Dong Chinese Dictionary

6. 夏启是中国历史上第一个王朝的开创者。

   Xià Qǐ shì Zhōng​guó lì​shǐ​shàng dì​yī​gè wáng​cháo de kāi​chuàng zhě.

   Xia Qi was the founder of the first dynasty in Chinese history.

   Source: Dong Chinese Dictionary