So... North Korea (DPRK) often has it's citizens chant "10,000 years" when the great leader appears before a speech. Google says it's also a thing in previous eras of chinese history but I really only follow Korean history in the east.
Nothing says Kpop Like 사랑하는 지도자님, 오 사랑하는 지도자님, 우리나라를 위대하게 만들어 주십시오.