'teamLab Crystal Fireworks' - By selecting a firework on your smartphone, you can see the firework as a three-dimensional light display composed of hundreds and thousands of light points. 'Resonating Trees' - When people pass close to the trees, the light changes color and a tone color resonates out. 'teamLab Crystal Fireworks' and 'Resonating Trees' operate together, and when you select and set off a firework it's color will be spread out to the surrounding trees.