Adventure Diary: Metamorphosis

Brother and sister Li Haoyu and Li Youfang are college students. During the vacation, their parents' old friend Dr., Invented a magical machine that can zoom in and out. At the doctor's request, brother and sister Li Haoyu and Li Youfang got on the machine and asked the doctor to test it. However, the machine did not respond after it was started. Just when the doctor was confused and was about to turn around to get tools for repairs, the machine suddenly started and the two of them were shrunk! The doctor didn't notice, thinking that the two of them had gone elsewhere, so he moved the machine and threw the two of them off. They fell into the sewer and landed on a strange island near the doctor's home. What story will happen to them? Please read this book