I, the Iron-Eating Beast, Became the Contracted Spirit Beast of the Empress

In a fantasy world, warriors practice beast control, contractors share their cultivation with alien beasts, and the strong reach for the stars and the moon, destroying the heaven and the earth! I am Wu Zhi, and I was reincarnated into an iron-eating beast. I just want to rely on my cuteness to eat and wait to die. After binding my contractor, while other spirit beasts were cultivating, I chose to continue lying down, eating, drinking, playing, sleeping, and doing everything well. However, my contractor turned out to be a middle-class princess with a strong ambition, who often called herself the empress. ... I am Zhuang Banxue, the empress of the Immortal Dynasty. I am only one step away from proving the power of the Immortal Emperor. I use the exotic treasure to regenerate my childhood. I vow to re-prove the Immortal Way without leaving any regrets. After my rebirth, I actually contracted with the iron-eating beast, a strange beast in the fairy world. As the strongest spiritual beast, I was destined to ascend to the throne of the Immortal Emperor! However, my iron-eating beast seems a bit lazy. He only eats and sleeps every day, or goes shopping with his maid. He never knows how to practice. I have no choice but to work hard and become the Immortal Emperor.