Linking to my post about this in a different thread.
It looks like PLA was conducting war games simulating a Taiwan invasion scenario with Eastern TC acting as the invaders and the Northern TC playing the role of defenders. Using tank transport trucks would sacrifice the fidelity of these war games as in an invasion of Taiwan they would not be landing such trucks with the invasion force. Dispatching the trucks by land ahead of time as a cost saving measure would also reveal the location of the invasion to the defenders in these war games.
Also, for these war games, large tracts of the sea off the SE coast of Shandong, from the tip of Shandong Peninsula all the way down to Lianyungang, Jiangsu, was shutdown for 5 days. Ship traffic to two of China's busiest ports, Qingdao and Lianyungang would be affected by these restrictions. While it doesn't look like the ports were shut down, but ships would have to go around the restricted areas to get to/from the ports, resulting in delays and increased fuel consumption.
Two other areas further out in the Yellow Sea were also cordoned off for the reason of rockets plunging down, which suggest ASBMs taking part in these war games.
So, apparently, these war games are important enough to be worth incurring the costs of delaying and re-routing ship traffic to two of China's busiest ports as well as the firing of a very expensive ASBM. In comparison, the cost of resurfacing a stretch of street is trivial.