When was musket introduced to Japan?

1543. The Portuguese brought the "iron gun" (musket) to Tanegashima.

The Japanese call this historical event "てっぽぅでんらぃ".

Then Tanegashima Shi Yao, the vassal of Tanegashima, bought these iron cannons, and let the retainers learn how to make them, and gradually spread them to famous families all over the country.

Today, Tanegashima is a Japanese air launch center.

It is said that the translator for the Portuguese was a China native who claimed to be the "Lord of the Five Peaks". This "master of the Five Peaks" may be Wang Zhi, the leader of Japanese pirates, who later surrendered to the Ming government and was beheaded.

Toyotomi Hideyoshi's invasion of Korea "The Battle of Lu Wenqing" took place in 1592. From the time point of view, it has been 50 years since the iron cannon came, and muskets have become popular in Japan, so it is possible for Japanese to use muskets on a large scale in South Korea. At the same time, the Ming army actually began to use muskets and cannons widely.