Vortex clan and Qianshou clan are distant relatives, and there is a close relationship between konoha and leaves. The red vortex marks on the clothes worn by Konoha Ninja (also on Naruto's clothes) are a symbol of the friendly relationship between the vortex country and Konoha.
Because the vortex clan is good at sealing the country and has strong vitality, it is regarded as a thorn in the side of other countries and eventually perished in the war. Those who survived lived in seclusion in other countries, such as Nagato. Jiuxin was chosen as the pillar force of the second generation Kyubi no Youko because of its whirlpool blood and natural powerful chakra. The first generation is Uzumaki Mito, the wife of the first generation Huo Ying. In the first world war between Ban and the first generation, she sealed it in her own body to help her husband.
Jiuxin, as the second generation pillar force, was brought to and settled in Konoha. I met Namikaze Minato, Naruto's father, and fell in love with him. Finally, they became husband and wife and had Naruto. They should be the happiest family, but the strength of the female column will reduce the sealing force to bijuu from pregnancy to delivery. When the masked man saw this, he laid hands on nine Sinai and pulled out Kyubi no Youko. Finally, Nine Sinai and Four Dynasties died in front of Naruto to protect him.
See episodes 466 to 469 of Huo Ying for details, which is very touching and makes me cry.