I hope a big korean company is willing to invest in a super Vpop group  

Skills and visuals should be at the top level like Kpop idols. Music video with high production value. Only thing the group must not do is to make a Kpop vietnamese song. The music must be something vietnamese audience can resonate to. Styles like Son Tung, MIN, Toc Tien, Hoang Thuy Linh, JACK and Vu Cat Tuong are examples they can try, only with better production. This can only be achievable with a big korean company. I thought Rbw with D1verse would make that change, but they was a HUGE letdown. D1verse music  and video was not in the same standard as today's Vpop quality.