His fans really did their best effort to make this #HappyChenChenDay a trending one in at least ten countries and the most is on worldwide where it ranked its highest on number one!
Kim Jong-dae or Chen for the most is the lead vocalist of Exo-M. He was the last Exo member scouted by S.M. Entertainment after passing through the company's S.M. Casting System in early 2011.
Happy birthday!
SOURCE: #HappyChenChenDay