I'm not a builder, but I have lived in China and seen many many dodgey builds. Brand new apartments that have cracking walls and ceilings, every apartment I have ever rented, I have had to have air tests, due to the heavy heavy use of formaldehyde and other toxic chemicals used in building materials, not to mention incorrect or inadequate ventilation.
As an example I watched some guys build a brick fence out the front of some new apartments near my work. Day one, I watched them mix concrete with big sticks on the GROUND. That afternoon, I saw a whole bunch of guys standing around the hole for the footing, it was filled with concrete, but didn't make it all the way to the top. Day two after standing around, smoking lots of cigarettes, they decided to fill the rest of the hole with dirt, then concrete over the top until it was all level-ish.
Day 3, they started laying the bricks.
Now the fence looks great, but next time we get a big rain, the fence will either crack in halves or be about 30cm shorter than it is now.
Most of the "new" and "impressive" buildings will look like crap in 10 years.