Last year, there was a story circulating on the internet. An ordinary office worker uses post-it notes to decorate the wall of the office. It is similar to a mosaic design. Such design not only makes the boring office very interesting, but also improves the mood of employees. Two advertising agencies in New York fought for the "mosaic". 

Why is everyone so keen on "mosaic"? What fun can "mosaic" bring to children? According to the research, "mosaic" can improve children's imagination and creativity, increase their endurance and their drawing skills.  

Today, Long Museum provides children with mini "mosaic" and post-it notes. It invites children to use post-it notes to create artworks based on the exhibition "Beyond Clouds: Wang Jieyin".