Siheyuan: From the Start, I Turn into an Apple to Cheer Up a Kid

Zhang Fan awakens a sign-in System and transmigrates to the Courtyard Menagerie. When Nuan Nuan cries from hunger, he brings out apples from his personal space. With the inheritance of Eight Extremities Fist and medical skills, this transmigrator, determined to protect his little sister, must fight to survive!