Ten tails have ten tails and one eye. Is the strongest supercreature in chakra. The existing nine bijuu, Shukaku, Lv You, Jifu, the Monkey King, Kokuō, Saiken, Chongming, Niugui and Kurama kyuubi are all ten tails split from chakra.
Therefore, ten tails are better than nine bijuu. When ten tail appeared in Huo Ying reporters of World War IV, Kyubi no Youko and Hachi bijuu could only compete with ten tail.
The greatest advantage of Kyubi no Youko is that it has infinite chakra, but ten tail also has infinite chakra. Coupled with ten tail's special abilities, Kyubi no Youko can't beat ten tail at all.
The birth of bijuu.
In ancient times, the family of vats planted a sacred tree and sent vats to guard the sacred tree at night, waiting for the fruit of the sacred tree to bear fruit once in a thousand years. Hui Ye fell in love with the king of the earth after he came to earth, and gave birth to Da Muyufu and tsutsuki Hamura. Then in the war, Ye Hui swallowed the fruit of the sacred tree to protect her children. Then Ye Hui was afraid of being discovered by the Woodies.
In this matter, people's spirit is constantly committed to making a sacred tree. This caused dissatisfaction among the villagers. In order to protect human beings and their mothers, Yu Yi and Yu Yi Village combined Ye Hui and Shenshu into one and became ten tail.
After a long battle, the two brothers sealed their mother with the earth-shattering star and won. Afterwards, Yu Yi thought that ten tail, with its huge chakra, would bring disaster to the world, so she absorbed chakra of ten tail into her body and scattered ten tail into nine bijuu to weaken their strength. Every bijuu has an independent consciousness and can extract chakras independently.