What apps did I have in those years when I was a teacher of Yin and Yang?

Himalayan APP. My Years as a Teacher of Yin and Yang is a fantasy novel, and the novel is only copyrighted by Himalayan APP, so it is only available on Himalayan APP. The novel mainly tells the story that Cui, the protagonist, went to learn from his teacher for more than half a step after his death and was resurrected under the guidance of his master Wei. Later, he returned to the city and told stories about mysterious and wonderful things such as ghosts and gods, five disadvantages and three deficiencies, and three books.