
‘Our dynasty’ refers to the Qing Dynasty (Aisingioro Dynasty).
There are two key keywords here.
‘Bogapje’ and ‘Giin’
Many test takers connect Bogapje with Lee Gapje of the Ming Dynasty.
Select number 4 (the option related to the Ming Dynasty).
But
In materials within the official curriculum, such as textbooks, special skills, and resourcefulness,
There is no description related to armor.
Therefore, when the test taker sees the word ‘Bogapje’,
Naturally similar system
It is easy to think of Lee Gap-je of the Ming Dynasty.
And the word ‘Giin’ does not exist in the curriculum.

Many people say it is wrong unless additional keywords such as gin are captured or not.
The word ‘Gin’ does not even exist in the curriculum.
You can infer by knowing that it is the same Chinese character as the eight elements, or
It has to be solved by linking prior knowledge like that.
So, without leaving the curriculum,
How on earth do you infer the answer to this question?
This is the part where ‘armour was organized in the Mongolian region’.
The only Chinese dynasty that effectively ruled Mongolia was the Qing Dynasty.
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