described the foreign relations or international relations
of Joseon, mainly about trade and surrounding world.
Joseon is a closed country. Joseon has dealing with
only Japanese of Tushima. The base of trading is in
Busan, a city on the southeast coast.
(This probably refers to a Japanese trading branch in
Tushima acts as a go-between of exporting peppers,
musk trees, alum, buffalo horns, deer or stingray skin
which Dutch or Chinese people bring to Japan in exchange
with popular goods from Japan.
Joseon people also trade partially with Beijing or the
north area of China. But it is very expensive because
they have to cross the border by horse.
Unless they are wealthy merchant, they can manage the
high expense of trading.
Furthermore, this trade usually takes three months.