BUILD a city in the middle of the vast desert???? a long way to go,,, only the beginning currently,,, always challenge ahead,, combat with the sand storm everyday,,, it is already difficult for building maintenance,, BUt even more extreme, more challenge to protect the trees for survival,, these trees are very vulnerable,, I never been there,, but I can assume the tree survival rate are low,, especially when they are new,, lots of them won't last a year and turn out dead,,, that's why they keep re---plant new trees every year...