Illustrated Treatise on the Maritime Kingdoms

Illustrated Gazetteer of the Maritime Kingdoms, Volume 57: Northern Ocean, The Kingdom of Prussia

According to the Record of the Seas, the Single Eagle Country, also known as Daiti, is located northwest of Shuangmi. Its territory and customs are somewhat similar [to the previously mentioned nations]. The foreign ships that currently come to Guangdong flying a white flag with a single eagle painted on it are from this country.

It is also called the Kingdom of Prussia original: 埔魯寫 (Pulu-xie), and is also known as Magdeburg original: 馬西噶比 (Maxigabi); likely a phonetic rendering of the city or region of Magdeburg, which the author mistakes as a synonym for the whole country, located to the north of the "Single Eagle" region. This text treats "Single Eagle" and "Prussia" as two different things. It is likely that "Prussia" refers to the capital city, while "Single Eagle"—the name used for trade—refers to the larger territory. This is similar to how the city of Andijan a city in present-day Uzbekistan is often used to refer to the broader region of Kokand a historical khanate in Central Asia. I note that Prussia follows Christianity original: 天主教 (Tianzhujiao); here used generally for Western Christianity, though Prussia was primarily Protestant and its territory is distinct from the Muslim original: 回回 (Huihui) lands. Its customs are similar to those of the Muslims. These regions are adjacent; this suggests an occasional similarity in customs, but does not mean their religions are the same. From Aleppo original: 亞哩披華 (Yalipihua); Xie Qinggao's route often traced overland/sea connections from the Middle East into Europe to this place, the weather becomes increasingly cold. Both men and women wear fur clothing, resembling the "snow-cloaks" worn in China. At night, they use these clothes as blankets. From here northward, the land borders the sea, and its furthest extent is unknown.

The Universal Geographic Atlas original: 萬國地理全圖集 (Wanguo Dili Quantu Ji) states: The country of Prussia original: 陂魯斯 (Beilusi) connects to Russia original: 峩羅斯 (Eluosi) and Galicia original: 地利加 (Dilijia) to the south.