No charge. "Panda Olympiad" is an Olympic enlightenment product carefully created by Panda Paradise for primary school students. It tries to be visual and childlike in product design. The software is invested and developed by public welfare fund companies, so it is free. Its software has brought many knowledge points of Olympiad mathematics for primary school students. Through the software, they can learn the Olympic Mathematics course online, cultivate their children's learning thinking ability from the exam, and provide various logical thinking trainings, which have won unanimous praise from the public.