This is the 6364th most frequent German word.
durchbruch
Breakthrough.
In this sentence, 'Durchbruch' is used metaphorically to signify a significant achievement or success that established the artist prominently.
Der Künstler hatte seinen Durchbruch mit dem neuen Gemälde.
The artist had his breakthrough with the new painting.
Here, 'Durchbruch' refers to a literal occurrence where something penetrates or opens a way through an obstacle, specifically sunlight through clouds.
Der Sonnenaufgang gelang durch den Durchbruch der Wolken.
The sunrise succeeded through the breakthrough of the clouds.
In this usage, 'Durchbruch' denotes the act of breaking through a physical barrier, such as creating an opening in a tunnel's structure.