EXO Luhan's has made a Guinness World Record for the 'MOST COMMENTS ON A WEIBO POST'.

Quoted from Guinness World Records's description,

"As of 5 August 2014, the most comments on a 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 Weibo post was 7,913,107."

His post was about Manchester United that made him ousted a lot of celebrities' posts on weibo. Congratulations! Luhan is now a Guinness World Record holder.

You can see his record from Guinness World Record website here.