单双数学公式简介：He was very sure that Qin Er was Du Juan's younger brother. Although the other person had no memory, Li Dao believed in his own judgment and stayed by his side, teaching him slowly so that he could arrange a future for him in the future.
He was very sure that Qin Er was Du Juan's younger brother. Although the other person had no memory, Li Dao believed in his own judgment and stayed by his side, teaching him slowly so that he could arrange a future for him in the future.
