>>519351540
Because their GDP is fake as fuck and still too high. It's more likely closer to India's GDP but China boosted their fake GDP with construciton. For instance China all these subway lines which might seem impressive until you find out they have subway stations in the middle of nowhere. It's all for show. See:
https://www.reddit.com/r/Damnthatsinteresting/comments/18gxozt/exit_of_chinese_subway_in_the_middle_of_nowhere