This book has been copied and translated into Korean from Seo Yu-mun’s travel book. Seo Yu-mun, who was a civil servant in late Joseon period, was sent to Beijing in October 1798 (year 22 of Jeongjo) as one of the foreign envoys, and came back on 2nd April the next year. This book is a Korean translated version of Seo Yu-mun’s 160 days of Beijing trip, but the original Chinese version does not exist anymore. It is notable that this journal was translated into Korean unlike other travel books.