"Hoang Hoa su trinh do" is an ancient book describing one of the diplomatic activities between Vietnam and China in the 18th century.

It features the sending of Vietnamese envoys to China, showing exchanges between countries in the Asia-Pacific region.

With writings, drawings and maps, the book recorded the diplomatic relationship between Vietnam and China in the 18th century through journeys of Vietnamese envoys.

"Hoang Hoa su trinh do” has earlier been listed as one of documenta🔜ry heritage in Asia and the Pacific./🀅.