Siheyuan: the Country Wants Silly Zhu's Brain

[Siheyuan + Heaven-defying Comprehension + Skill Upgrade + Scientific Research for a Powerful Country] Time traveled to the fifteen-year-old He Yuzhu. At the beginning, his father ran away, leaving only a five-year-old sister. I wanted to support my sister by cooking, but I accidentally learned various skills. Cooking, Chinese arts, medical skills, machinery, scientific research, there is nothing he can't learn as long as he practices it. Many years later, the beasts in the courtyard are still fighting for that little piece of trivial matter, but the state has come to ask for him personally.