The links to the right provide a wide array of coverage of China and its economy. Don’t however just regurgitate; add value! You can for example combine several stories, or start with one story and look for related (albeit perhaps years older) items.
Even better: go to EconPapers and look for recent academic research on China. Conveying that content makes an excellent blog post.
For your initial blog you might want to look for something on regional variations – ethnic minorities, what’s happening at the edge of the desert, what’s happening in regions with plentiful water, mountains, coastal areas – or rich vs poor, college educated vs the average. Be inventive!