On the evening of September 28, 2014, Sina Weibo began restricting search results for "Hong Kong Tear Gas" (香港 催泪弹). These screenshots were taken around 9:30 pm, and show that a user entering that search would only receive results in the categories "Top Picks" and "Websites." Clicking on the link labeled "View all search results" leads the user to a page that says "In accordance with with relevant laws, regulations, and policies, search results for 'Hong Kong Tear Gas' have not been displayed." (根据相关法律法规和政策,“香港 催泪弹”搜索结果未予显示。)
In contrast, this screenshot was taken an hour earlier, and shows that when a user did the same search and clicked on the link labeled "View all search results," they were shown results from non-verified accounts, and were told there were over 700 search results.