Doraemon's Mysterious Guest

My name is Yuening, a very common name. Because of an accident, I came to the world of Doraemon. Awakened the system. It's just that this system seems to have a lot of functions. My identity seems to be a friendly exchange student between China and Japan. Pull it down. Why didn't I know that my mother still has friendship with a certain island country? On the first day I came to the island country, I still missed home.