Cannon Fodder in Books, the Yandere Sister Wants to Usurp the Throne Every Day

When he woke up, Su Mu transformed into the most useless idle prince in the Great Zhou Dynasty. At the beginning, he picked up a little girl on the side of the road who was about to starve to death. Six years later, he relied on the outrageous system of "my sister explodes equipment when she is angry" to transform the barren northwest into an industrial Cthulhu that makes the world tremble. Steam locomotives race all over the ground, and artillery can flatten a mountain. Outsiders called him King Iron Ning in awe, but Su Mu himself was confused: How did I become stronger? Until one day, he accidentally opened the locked diary of his sister Wu Yihuang: "My brother smiled at the female craftsman three times today and has arranged for her to go to the pig farm." "That bitch Jiang Ran wrote to my brother again. Next time he should set fire to her ancestral hall." "When I usurp the throne, I will imprison my brother in the palace. I will only be able to look after me in this life." Su Mu:? ? ? A sweet call came from behind: "Brother, what are you looking at?" Su Mu turned around stiffly and faced his sister's smiling face and the shining kitchen knife in her hand. Su Mu: System! What a yandere! ! !