3 sentences

1. 太子将继承皇位。

   tài​zǐ jiāng jì​chéng huáng​wèi.

   The Crown Prince will inherit the throne.

   Source: Dong Chinese Dictionary

2. 魏征在唐朝曾担任太子洗马一职。

   Wèi Zhēng zài Táng​cháo céng dān​rèn tài​zǐ xiǎn​mǎ yī zhí.

   Wei Zheng once served as the Librarian to the Crown Prince during the Tang Dynasty.

   Source: Dong Chinese Dictionary

3. 狸猫换太子是流传已久的民间故事。

   lí māo huàn tài​zǐ shì liú​chuán yǐ jiǔ de mín​jiān gù​shi.

   The story of 'The Civet Cat Exchanged for a Prince' is a long-standing folk legend.

   Source: Dong Chinese Dictionary