They're asking among the six of them, who has known or met who before. Then Joong said he met Phuwin before he came into this industry, and he met a tall person who has a celebrity aura and that person was Phuwin. And Phuwin added saying that they met each other at the test center, Joong came to greet him and then they exchanged each other's ig's and that's how they became close. And then there are Pond and Dunk who goes to the same university, and they met each other on Pond's first year. So out of the 6, only Joong and Phuwin, and Pond and Dunk met each other before, while Earth and Mix knows them and each other through working in GMMTV.