Siheyuan: I Pick Up a Girl from the Start, and Sign-In Makes Me Stronger

Zhang Weidong wakes up to find that he has transmigrated into Love in the Courtyard as a sickly young man! From the start, his family has nothing, his three-year-old little sister Xixi is so hungry she's gaunt, and their last reserves of food have been stolen by the thieving rascal Banggeng! At his lowest point, he activates the [God-Tier Sign-In System]! His beginner's gift pack contains grain, oil, meat, eggs, skill cards, and gene serum! After taking the gene serum, his sickly body recovers instantly, and he gains a six-pack! One Baji Fist card is enough to make Silly Zhu and Jia Dongxu beg for mercy! When the beastly neighbors come demanding repayment and scheming to seize his family's property, Zhang Weidong punches Silly Zhu, kicks Jia Dongxu, and leaves Yi Zhonghai speechless! He buys his little sister new clothes and toys, and their quality of life shoots up! Meanwhile, Jia Dongxu is secretly plotting to report Zhang Weidong to the factory security office for "an unexplained source of enormous wealth"... This time, with the System in hand, Zhang Weidong vows to protect his little sister and carve out a bright future in this courtyard full of beasts!