Why is the rising white not afraid of the beast god?

Because he is a Kyubi no Youko decepticon who has practiced for thousands of years.

Kyubi no Youko Tianhu, who has practiced for thousands of years, easily accepted Lu Xueqi Tianjun's sword, and seems to have forged a profound friendship with the beast god. In the ancient Tian Hu family, Kyubi no Youko Tian Hu is the cleverest and most mysterious one. It has practiced for thousands of years, and it is profound in Taoism and magic. He once easily accepted the sword of Lu Xueqi Tianjun.

It turned out that he was imprisoned by the Eight Fierce Flames in the forbidden area of Xianggu for 300 years, and was later taught by the ghost teacher Li.