What is the original novel of teacher's cartoon in April?

Song of the Sky is April's first comic book, which is set in the world of cultivating immortals full of magnificent fantasies.

The electronic version was first serialized by Bi Li Bi Li Comics Company. In addition, Song of the Sky is also serializing cartoons.

Introduction to the story:

In her later years, Jing Guifei gave birth to twins in Xia Guang. The prince was born with Zhu Shazhi on his forehead, and his daughter was born with six fingers. Good omen and bad omen appeared at the same time, which made the twin brothers encounter completely different fates and were forced to separate from their relatives.

Reference to the above content: Baidu Encyclopedia-Step Sky Song