Beast Control: the Cow Raised by the School Belle Turned into a Black Rhinoceros Armor?

Traveled to a world dominated by spiritual beasts. But he turned out to be an ordinary buffalo! Fortunately, I have awakened the Devouring Evolution System, and originally I evolved into a mythical creature by eating and eating all the way. But he actually made a contract with the school beauty! The origin of the Black Rhinoceros armor was also extracted. In the Royal Beast Awakening Plaza! A buffalo mutated into a black rhino. Xu Ji looked at the Qiankun belt floating around his neck and fell into deep thought. Etc! What does it mean that the black rhinoceros armor you transformed into can control all the water in the world? Sulfuric acid is water! Who is the molten iron with a temperature of up to a thousand degrees? Huangquan is also water! Even the Zimu River in the myth can also be controlled. My name is Bai Xiyue! In my previous life, I was the empress of the demon clan! Ice crystal phoenix! But when I died while fighting for the treasure with the Dragon Emperor, I didn't expect to be reborn. Although he was just reborn as a little white snake, he also became the human race's beast! Still in second place! But it doesn't matter! As long as I destroy the first-ranked spiritual beast contract, I can successfully advance to the first-ranked one and break away from the human race contract. But! Why is this cow so strong? Why can't I even beat a cow?