In the year of 2012, there is the festival called World Energy Day, which is held during the first week of July annually by countries taking part in the conversation of energy and in the development of solar power. In the festival, participants not only encourage people around the world to save energy, water and any kind of resources by making videos or producing advertisements. Aside from that, residents or politicians gather to the street and parade with their hands raising a hung solar panel. The most attractive thing is that when the solar panel absorbs the radiation power from the sun, countless national flags fixed on a big board, which is made out of tens of thousands of LEDs Bulb, will glitter.. Hence, several flags consisting of LEDs Bulbs will be showed to the wh*** world by media. It truly makes the countries having already been involved in the protection more willing to save our planet and celebrates the progress about environmental protection many countries make for our irreplaceable “Earth”.