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So some people should know that I'm the warmest Chinese player, lmao.
 
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Design of the latest farmland locations in China.
QQ20250523-022352.png

In fact, on this map, there may be more farmland in Poland than in hole China. I find it hard to imagine what historical materials these designs were based on, because I can't even imagine a single book supporting such designs.

View attachment 266701263_4_20230528044425245.jpg

These areas can be regarded as farmland, especially the North China Plain and Guanzhong Plain, which have been the main agricultural areas for thousands of years.

View attachment 266701263_4_20230528044425245.jpeg

This is the original map.

In the caption, 潮土(7),绵土(1),土(2),黑垆土(3),灌淤土(24),水稻土(9)are usually classified as cultivated soil.

(It is difficult to find corresponding translations for these professional terms, so I choose to use the original text directly)


I only delineated the main farmland areas in 1337, and did not fully include the range of cultivated soil, which means that this is a more strictly calculated range. In fact, there are more areas that can be calculated as farmland, but this will affect the balance of the game.
 
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There are also many issues with climate classification.

I know that the climate of EU5 is based on Köppen, but modern climate should not be used.

It is too rigid in dividing different climates, especially in modern times due to the influence of urban heat island effect, which may lead to the fragmentation of areas with small differences in temperature and precipitation within the same geographical area into two different climates.

Climate.jpg


These cold arid regions are almost indistinguishable from the surrounding terrain and climate, but are rigidly divided. Especially in climate maps drawn with reference to other climate classification methods, these areas are located in monsoon regions with semi humid areas with precipitation greater than 400mm, and there is no significant difference in temperature and precipitation compared to surrounding areas. This almost divides several modern cities and surrounding areas into different climates, but as is well known, there was no Industrial Revolution in 1337.

Here are some maps of other climate related data that can prove that there is no significant climate difference between these areas and the surrounding areas.

china-map-of-precipitation.jpg

water-13-01509-g001-550.jpg

Map-of-the-annual-average-temperature-in-modern-China-revised-from-Xu-and-Zhang-2017.png

forests-13-01541-g001-550.jpg

13157_2022_1568_Fig2_HTML.png

Map-of-climate-zones-in-China.jpg
 

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There are also many issues with climate classification.

I know that the climate of EU5 is based on Köppen, but modern climate should not be used.

It is too rigid in dividing different climates, especially in modern times due to the influence of urban heat island effect, which may lead to the fragmentation of areas with small differences in temperature and precipitation within the same geographical area into two different climates.

View attachment 1304380


These cold arid regions are almost indistinguishable from the surrounding terrain and climate, but are rigidly divided. Especially in climate maps drawn with reference to other climate classification methods, these areas are located in monsoon regions with semi humid areas with precipitation greater than 400mm, and there is no significant difference in temperature and precipitation compared to surrounding areas. This almost divides several modern cities and surrounding areas into different climates, but as is well known, there was no Industrial Revolution in 1337.

Here are some maps of other climate related data that can prove that there is no significant climate difference between these areas and the surrounding areas.

View attachment 1304387
View attachment 1304388
View attachment 1304389
View attachment 1304394
View attachment 1304400
View attachment 1304386
I think this is worth making a separate post.
 
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