1842年中国及中国人的素描册，像素达到6300。

If you're interested in a fascinating piece of history, I'd like to introduce you to "China and Its People: Sketches" from 1842. You can view the sketchbook in PDF format, featuring images up to 6300 pixels wide. Explore it by clicking the link below:
China Sketchbook PDF
You can either click the link to save the PDF or copy the content and open the "Aliyun Drive" app. It allows you to view the high-resolution images quickly, with the option of playing videos at double speed.