Yangzhou bridge workers quality is that bad

Don't rule out a good master, but most of the craft is really more tide, for the simple reason that the good master of this has not finished below a number of appointments have been booked, who have time to go to the bridge to stand class ah, in general, only those who have nothing in hand, forced to come out of the livelihood of the only stand bridge. In addition, the key to some of the works within a short period of time can not see the good and bad, a long time some problems where you go to find him rework?