二到无穷大傻到没文化
[èr dào wú qióng dà shă dào méi wén huà]
This username 'Ertodeshangda Sha-daomeiwenhua' translates to 'Silly beyond measure'. It's a self-deprecating statement indicating someone who considers themselves to be very foolish or lacking in sophistication. The use of exaggeration ('infinity' and 'lack of culture') suggests it is intended as humorous.