Environment: It was a clean city n years ago, so it was very clean. What's the environment now ... (forgive me for being from Zhangjiagang, I'm not sure), there are no places of interest, and it's not bad to visit the park.
Economically, I can only say that Zhangjiagang is too rich and there are too many ordinary families (especially on holidays, dear, the man in the supermarket can't find a parking space).
Crowd: It should be said that Zhangjiagang people can still do it.
Salary: it depends on what you have done, but since the end of last year, there have been many layoffs.
House price, if you buy a house, the house price in the urban area is very high, but it is ok in the town. If you rent a house, it is wise to go to the town or country, which is cheaper.