This miniature map of China, Korea and Taiwan depicts major towns and key topographical features. The Great Wall is illustrated at top and Korea appears as a strangely shaped peninsula. Pierre Duval was Nicolas Sanson's nephew and pupil. He published a wide range of atlases and individual maps including a fine miniature world geography with many of the maps based on Sanson.
References: King (2nd ed) pp. 132-135; Pastoureau, Duval XI Fa.