The Black Stars and Jin Chonglin's army of fans immediately swarmed and took over the internet once the names of their Boss Iris and Prince Lin Lin were mentioned. They watched the trailer in droves to confirm whether it was their boss and prince's voices who were really singing the theme song together. Their collective action resulted in the trailer becoming the most viewed video within a 24-hour period.
As diehard fans, they instantly recognized Iris Long and Jin Chonglin's voices. Even if the two changed their faces, their loyal fans would always recognize them by their singing voices.
However, it was much easier to recognize Jin Chonglin's singing voice than Iris' because people had already heard him trying to sing in different music styles throughout the years that he had been in showbiz.