The test notes of the Bird's Nest on the 0/0 anniversary of the Olympic Games/KLOC are to show their technical strength, or as a carrier to promote new anti-counterfeiting technologies. The word "TestNote" is a foreign word named "test note" in English, which is printed by a printing factory or printing company. The test paper money has the anti-counterfeiting technology in paper money. There are generally three kinds of trial clothes: experimental trial clothes, such as Ashima, girls and so on. Sample tickets or submit sample tickets, such as the Temple of Heaven Bird's Nest, Five Stars and Five Rings, etc. Commemorative vouchers for major events, such as peacocks and centennial notes. The test banknotes are printed by the banknote printing factory to show their technical strength or to promote the carrier of new anti-counterfeiting technology.