The reason was that the three heads of the director team felt that the water sleeve dance wasn't graceful enough and lacked expressive power in front of the camera.
After all, the first three acts were explosive rap performances or drum symphonies and the like. Suddenly inserting an elegant water sleeve dance seemed to lack that final touch.
It indeed boosted the cultural vibe, but it didn't have enough impact. To make the water sleeve dance impactful is quite a challenge unless the performer uses wires.
However, the venue was the city that never sleeps, not a studio, making it difficult to set up wires. Various reasons piled up, which is why the program kept being delayed.
In this afternoon's creative meeting, the water sleeve dance was only mentioned in passing. It wasn't discussed further, so it's likely that the directors had already sentenced the program to death.