How to evaluate xinjiekou combination?

I started in into the pit from Xinjiekou at first, but I didn't want to go to school. I rap the Three Kingdoms Kill in Beijing, and so on. Their old songs are still very nice. Later, I found that I had a favorite singer with a wide network of contacts, but after all, I listened to them and started listening and singing, so I still paid attention to them from time to time. Later, some songs, such as "The Carmine on My Neck", were quite nice ... But, to be honest, I personally feel that Xinjiekou has become more and more biased in recent years. I heard about Xinjiekou some time ago.