When I tried to create a new query on https://data.stackexchange.com/stackoverflow/query/new, I didn't see any hint for me to work on CAPTCHA, so I just clicked Run Query, and the next page was https://data.stackexchange.com/query/save/1 whose content is only:
{"captcha":true}
Is it because of me being under the GFW?
What can I do to make it work?