Natural naughty. It is the memory of a generation to capture snakes in spring, catch cicadas in summer, raise crickets in autumn and rob birds’ nests in winter. How to create current context? How to become a series? Then I think of Leonardo Da Vinci again. Why cannot my mind run wild? Why cannot I confine myself to time? Fake a classroom with insects and birds in four seasons. The carrier is just a trance. Everything has come to the end.So, passing by a blackboard full of formulas and puzzles, turning around, insects flying in front of you or legendary aircraft of Leonardo Da Vinci? The memory of childhood emerges indistinctly, with colors to fill up the space.