打败奥特曼的小怪兽
[dă bài ào tè màn de xiăo guài shòu]
Originating from a popular Japanese superhero series Ultra Series where heroes called Ultrafighters (referred as 'Ultramen') fight against various monsters. This playful name humorously refers to the monster or an underdog winning, suggesting unexpected triumphs in personal challenges or a humorous self-reflection on overcoming difficulties.