Which city was once called the first city in the extreme by Xu Xiake?

Tengchong, Yunnan.

Xu Xiake was an outstanding geographer, traveler and writer in Ming Dynasty. His travel notes, Xu Xiake's Travel Notes, recorded his travel experiences for more than 3 years, and was praised as a masterpiece of China geography. This travel book vividly depicts the scenic spots, wonders, customs and social life involving more than half of China, leaving a very valuable cultural wealth for future generations.

Xu Xiake mentioned a city in his travel notes, which he called "the first city in the extreme". Through the in-depth study of Xu Xiake's travel notes and related historical background, we find that this city is Tengchong City in Yunnan. Therefore, Tengchong, Yunnan, was once called "the first city on the polar edge" by Xu Xiake.

Tengchong is located at the border of Yunnan, with a very special geographical position, and is known as the "South Gate" of China. In Xu Xiake's time, China had not yet opened its frontier, and Tengchong became the limit of his exploration. This city has brought him great adventure and exploration pleasure, and also made him feel a unique travel experience.

Tengchong is famous for its magnificent landscape, unique natural scenery and rich biological resources. Xu Xiake vividly described the magnificent scenery of Tengchong in his travel notes and praised it as a fascinating tourist destination. He was full of praise for Tengchong's strange and magnificent landscape and picturesque scenery, which left a deep impression on people.

another option, Dandong, Liaoning, is located on the northeast border of China, and its geographical position is also very special. Xu Xiake also spoke highly of the natural scenery of Dandong, Liaoning Province in his travels. Tengchong and Dandong, Liaoning Province are different in geographical location, natural scenery and historical background. Tengchong is located in the border of Yunnan, with beautiful scenery and pleasant climate, rich mineral resources and unique national culture. Dandong, Liaoning is located in the northeast border, and its natural environment and geographical characteristics are different from Tengchong.

Tengchong's geographical location determines its particularity. As the southern gate of China, Tengchong is located at the border of Yunnan, which is an important channel for China to reach South Asia and Southeast Asia. This makes Tengchong the limit of Xu Xiake's adventure travel and endows the city with special historical and cultural value.

Secondly, Tengchong has magnificent natural scenery. The landscape here is beautiful, which combines magnificent peaks, peculiar landforms and clear water, forming a unique natural landscape. Xu Xiake described the magnificent scenery of Tengchong in detail in his travel notes, which made people feel as if they were in a fairyland.

In addition, Tengchong is rich in national cultural heritage. There are many ethnic minorities living here, such as Yi, Bai and Hani, and each ethnic group has its own unique traditional culture and customs. Xu Xiake's travel notes also recorded the distribution of ethnic settlements and people's life scenes in Tengchong, which provided valuable information for future generations to study history and ethnology.

To sum up, through the study of Xu Xiake's travel notes and historical background, we come to the conclusion that Tengchong, Yunnan is what he calls "the first city in the extreme". Tengchong, Yunnan, with its unique geographical location, magnificent natural scenery and rich national culture, has become an indispensable part of Xu Xiake's travel. Xu Xiake's description makes Tengchong, Yunnan a fascinating tourist attraction, and also provides valuable materials for future generations to study geography, history and ethnology. Let's walk into Tengchong, Yunnan, and feel the unique charm of this "the first city in the extreme"!