4 sentences

1. 这辆车的车牌号以“桂”字开头。

   zhè liàng chē de chē​pái hào yǐ“ Guì” zì kāi​tóu.

   This car's license plate starts with the character 'Gui'.

   Source: Dong Chinese Dictionary

2. 桂先生是这家公司的创始人。

   Guì xiān​sheng shì zhè jiā gōng​sī de chuàng​shǐ​rén.

   Mr. Gui is the founder of this company.

   Source: Dong Chinese Dictionary

3. 月中砍桂是家喻户晓的神话故事。

   yuè zhōng kǎn guì shì jiā​yù​hù​xiǎo de shén​huà gù​shi.

   The story of cutting the laurel tree on the moon is a well-known myth.

   Source: Dong Chinese Dictionary

4. 这种中药材是用桂的干燥树皮加工而成的。

   zhè zhǒng zhōng​yào​cái shì yòng guì de gān​zào shù​pí jiā​gōng ér chéng de.

   This traditional Chinese medicine is processed from the dried bark of the cassia tree.

   Source: Dong Chinese Dictionary