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Sure that's fair.

Do you have some reading on the incident that led to Twitter being blocked? I haven't heard of that and can't find anything online

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I was in China around that time and I don't remember the incident leading to Twitter being blocked. In fact, I think Twitter was blocked earlier than pollution incident. I do remember everyone getting pissed off that the US Embassy reading was so different than the local one: https://www.earthdata.nasa.gov/learn/sensing-our-planet/craz...

It was not completely blocked in November 2010, but was completely blocked shortly there after as far as I remember (I was in Beijing from 2007 to 2016).

China wasn’t measuring 2.5 ppm at all back then, and was rather touting improvements in 10 ppm because a tree planting effort in the gobi temporarily solved northern china’s dust storm problem. They were basically pretending that 2.5 ppm pollution didn't exist.

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