The episode of The Brain where Jay made his second guest appearance was broadcast on 28 February 2014.
You can watch it here.....quickly before it gets taken down or something.
And a translated article about the show from Jay Chou Studio:
I've only just finished watching the whole show and I must say Jay's self-deprecating humour was very endearing and his honest but kind words of encouragement to the contestants were heartening.
He has definitely matured well and of course, that eye-catching pink blazer was the icing on the cake as he looked absolutely stylish and oh-so-handsome!
For more photos, do check out the whole album on Jay Chou Diaoness' Facebook Page: