But on stage, singing ability is only one part, and not the most important. All the factors are just there to serve the overall stage effect.,After co-hosting the opening with Park Ji-hyun again, Ji-sung quickly returned to EXO's waiting room to change clothes.,"I'll be back at the set tomorrow afternoon... but I have something to do at the company after this, and it's going to be quite late when I get back." Ji Jingyuan replied after some thought.。