Where did all the concrete go?
It went into building China. More specifically, it is being used to build a huge flyover near my home (American English: overpass; Chinese: 立交桥). The amazing thing is that what you see in the pictures did not exist 3 weeks ago. It grows by 10 metres when I pass it week-by-week.
China's vicarious appetite for natural resources is well documented. Tianjin is transforming itself to be alike any other modern city. But in the meantime, it means a lot of old buildings are being torn down and the city is covered in a huge dust cloud from all the construction.
I predict that when the London Olympics come around I will look back at this time and wonder why Britain was not able to match the speed of China's construction. I hope I am wrong.