Kaun Banega Crorepati 5 fame Sushil Kumar opens up on life after winning Rs. 5 cr, calls it 'the worst, most challenging time'

Champaran born Sushil Kumar created history by winning Rs.5 crore on Amitabh Bachchan-hosted Kaun Banega Crorepati season 5 in the year 2011. Sushil, who cracked a jackpot, shot to fame instantly and.....