Namikaze Minato, the name of Huo Ying's fourth generation, tells at the beginning of the story that he died to seal Kyubi no Youko. He is the legend of Konoha, Legend 3- Tolerate Jiraiya's favorite pupil, Kakashi's teacher, and the father of the protagonist Naruto (PS: Naruto and his mother Whirlpool Ai Chen).
People call it wood yellow flash. During the war years, the enemy country had such a rule: if you encounter a yellow flash in the mission, you can give up the mission and escape. You can see this in kakashi gaiden's cartoon, which is not in the animation.
As for the rumor that he was the boss of Xiao before, it was also confirmed to be false by comics. Always want to know more, just read comics. (What kind of life should animation look at)—