Zhang Yang was pondering this question.
Logically, with such a large reservoir, if you find the right depth and relatively reliable terrain, and if there are fish nearby, they should have started biting after more than an hour.
Yet now, the spots for all three people showed no signs of activity, as if they had thrown their fishing gear into a home aquarium, motionless.
As mentioned before, no matter where you fish, if there's no communication between the bobber and the angler, it's the most extreme situation.
This means the angler can't get any useful information from the bobber's motion, and without information, precise judgment and adjustments can't be made. Many people fish all day without success; a lack of catches arises this way.
But considering who Zhang Yang is, even if the bobber doesn't move, he won't just sit around and wait. He quickly secured the slip knot, got off the fishing platform, and started preparations again.