Some numbers for this thread, although surely they also have been shown elsewhere:
Using the 860,000 sq. m. number provided upthread, that equals 210 acres or 160 American football fields. For further reference, there are several football (soccer) fields showing in the aerial photo upthread.
That land is
really flat. The soggy nature of the land suggested in the latest drone video is accurate. Hence the drainage canals still extant in the being-worked land; these also show in the older survey plats if you refer back to them. One of the upsides of this is that Hangzhou Bay is effectively immediately adjacent, and any number of the adjacent industrial plants have their own loading jetties built into the bay - what a fine logistical bonus that would be were Tesla also to be able to create same. There also are arterial roads in the immediate location.
Overall, by looking at a googlemaps view and 3-D + rotating, it looks to me just like any amount of land in the Netherlands: flat, sodden yet eminently usable for heavy industry given the appropriate groundwork. There already exist good-sized plants right there - not GF sized, but still large - and at least a few 5- to 6- story office buildings (I think not apartments).
PS: for whoever wrote "just one backhoe!" in a shorty farce in the
other thread....no. That's an excavator. Real builders don't use backhoes.