영조는 사신으로 청나라에 간 관리가 사비로 책을 구입하여 조정에 바치니, 그 상으로 벼슬을 올려주었던 것이다.
King Yeongjo, an official who went to the Qing Dynasty as an envoy, bought a book with his own money and gave it to the court, and he was elevated to a position as a reward.