It's hard to predict. Usually, new chapters come out based on the author's schedule and the publishing process. You could check regularly with the platform where it's hosted.
Chapter 28 of 'A Wonderful New World' manhwa brings some exciting action sequences and reveals some hidden secrets about one of the supporting characters. The story gets more intense as the conflicts escalate.
In chapter 21, the story progresses significantly. The hero discovers a hidden power and the villains become more menacing. There's also a hint of a larger conspiracy.
In chapter 25 of A Wonderful New World manhwa, there might be a major twist in the story, perhaps a reveal of a hidden secret or a significant confrontation. It could also focus on character relationships and their evolution.