Moba's Mistake for Treating the Empress as Her Sister

Chen Xin traveled through time and defected to his sister in Chang'an at the beginning. By chance, he met the empress Wu Zetian who was nostalgic for the past, and mistook the empress for her sister. Chen Xin: "This is Wu... My skill book, Empress Majesty, is given to my sister for self-defense." Wu Zetian: "..." Chen Xin: "Sister, the demon species is about to revive, and the world is about to be in chaos. I will practice hard and protect you for the rest of my life." Wu Zetian: "..." Chen Xin: "Sister, I can not only write poetry, but also know a little bit about music." Wu Zetian: "..." Chen Xin: "Sister, the current empress is fatuous and has caused chaos in the world. Now that I have achieved my magical power, I want my sister to be an emperor for fun." Wu Zetian: "???????" The empress got a younger brother for no reason, and she expressed her confusion. This younger brother is very strange. He always comes up with some strange things and says some strange things, and it always comes true. The introduction is too weak, please move to the main text.