Chang has collected and researched Taiwan's traditional toys, like "seven-piece puzzles" and "nine magic rings," for years, and is dedicated to reintroducing to the world the wisdom that went into them.
蒐集、研究鄉土童玩多年的張世宗，一直致力於讓七巧板、九連環等傳統童玩，重新體現它的智慧。