>>715342658First time Mongols got Tsushima and wrecked it to shit, they pushed to Hakata, where the met fierce resistance, but the typhoon ultimately finished the job.
Japan and the Samurai got their act together from all this and heavily fortified the area to never let it happen again. On top of that they actually changed their warfare and produced some of the highest quality of martial prowess on the planet.
When Kublai Khan was in his sunset years he got too ambitious trying to finish his grandfathers work. He wanted to build a navy and an army IN A YEAR to invade Japan.
The ships were built in Korea - and they had no chance to deliver a good product; the ships were complete pieces of shit - far from the usual technological advantage Mongols had. On top of that the invasion force was made from chinese heavy infantrymen, these guys really didnt wanna do the fight for Mongols, so the second wave of invasion was months late.
When The Mongols actually got into the shores of Nippon they faced highly discpilined, highly trained, highly prepared Samurai Gloryhound Warriors who all tried to up eachother how many ships they could sink or mongol heads they could take before their Glorious Death.
... and because the invasion was late the typhoon season arrived early and finished the job, again.