As of 5 August 2014, the most comments on a Sina Weibo post is 13,163,859, achieved by Lu Han (China), in response to a post made on 10 September 2012.
As of 5 August 2014, the second most comments on a Sina Weibo post was 7,913,107, some way behind
Lu Han's post.
source+
EXO’s Lu Han Enters Guinness World Records for ′Most Comments on a Weibo Post′EXO’s Lu Han has entered ‘Guinness World Records.’
Lu Han received over 13 million comments on his Weibo post from September 20 of 2012, getting listed in ‘Guinness World Records’ for the ‘Most Comments on a Weibo Post.’
Lu Han’s record has been gathering a lot of interest as this is the first time that Chinese SNS has entered ‘Guinnesss World Records.’
Lu Han received his Guinness World Record certificate and his Weibo post with the highest number of comments has been listed on Guinness World Records’ official website, proving Lu Han’s global popularity and influence.
Lu Han posted, "That′s why I love Manchester United", along with a video, back in September of 2012, which subsequently received over 13 million comments.
EXO will be carrying out its solo concert tour EXO From EXOPLANET #1 – The Lost Planet in Singapore in Singapore’s indoor stadium on August 23.
source: mwave