In this letter, Voltaire discusses the literary prowess and French acumen of the Chinese Emperor Qianlong (Kien-Long), whom he praises as ‘the greatest man of the two hemispheres.’ He also notes that he has sent the Emperor three volumes of Questions, addressed ‘Au Roy’.

In this letter, Voltaire comments on the literary talents of the Qianlong Emperor (Kien-Long), suggesting that they are surpassed by those of an unnamed author described as ‘un roi du Nord’. He also refers to Abbé de Chaulieu and his creative pursuits.

The author expresses deep gratitude for a recent letter from the sovereign, which revitalised him and eased his suffering. He playfully critiques the genealogy of the Chinese emperor Kienlong and discusses the origins of Christianity, linking it to ancient Indian religion. The author also praises the sovereign’s agricultural achievements and favourably compares him to Apollo, noting his talents across various fields.

According to T. D. N. Besterman, the letter is dated 1776.