The chinese poem "The Story of Mr. Shi Eating Lions"

Shíshì shī shì shǐ shì, shì shǐ, shī shì, shì shí shí shī. Shī sì shì shī. Shǐ shì shè sì, shì shī shì, shǐ shī shì shí shī shī, shì shí shí, shǐ shí shìshì. Shǐ shǐ shì shì shì shì, shì shī shì. Shì shì shì shì.

https://en.wikipedia.org/wiki/Lion-Eating_Poet_in_the_Stone_Den