China is being held back because of inefficiency and wastage. Look at how much time, money, fuel and other resources are being wasted in such traffic jams. These people could've/should've utilized this time and this money for either work or leisure. However they did nothing in this time. The fuel spent in this jam did no useful work. And so on. This is not development. This is sheer wastage, and it's keeping China back, although it might seem to profit oil companies.