What is McCartney’s general message about the Chinese?

The McCartney Embassy, also called the McCartney Mission, was the first British diplomatic mission to China, which took place in 1793. It is named for its leader, George McCartney, Great Britain's first envoy to China. The goals of the mission included the opening of new ports for British trade in China, the establishment of a permanent embassy in Beijing, the cession of a small island for British use along China's coast, and the relaxation of trade restrictions on British merchants in Guangzhou (Canton). McCartney's delegation met with the Qianlong Emperor, who rejected all of the British requests. Although the mission failed to achieve its official objectives, it was later noted for the extensive cultural, political, and geographical observations its participants recorded in China and brought back to Europe.

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that would be the steamboat because none of the other things are forms of transportation