Are you stupid or something? LOL Our expedition started around 1405 to 1433 during the Yongle Era which is the height of the Ming power. It was early Ming period. By the time you started the Imjin War, it was late Ming in 1592 and the Ming was already close off and weaken by nomadic threats. So yes, if we can conquer more offshore territories, it would occur in the 1400s, not 1500s.
Zheng He's expedition was an explorative apparatus and he did not , nor did the Ming Fleet, have the capacity to maintain foreign territories in the southeast asian region. You understand that contacts were made with the Majapahit Empire , which ruled current day Indonesia. Do you think that Zheng He would be capable to conquer their territory when the Yuan Dynasty themselves failed to take territory, rather, their expeditionary forces was annihilated ?
LOL.
American people helped us a lot during WW2 even though they were just for their own interests
We still need to thank Uncle Sam.
And we still owe Uncle Sam a thanks because he putted a collar on your neck and keep you in check for over 60 years .
But now looks like the collar is not tight enough and we will not bother Uncle Sam again.
As much as China criticizes the US , their presence in Japan serves China's interests. American can only stay in Japan for so long. Soon enough they will be "asked" to leave. In fact, we are seeing the gradual process. I long for that day.