Where should the sub-line be broken first?

Look at the position of the hook first, then look at the position where the secondary line is connected with the eight-character ring, and finally look at the connection between the main line and the eight-character ring.

Tangent line is a normal phenomenon in fishing. The most common reason is that the line is too thin and the fish is too big. To be precise, the impact of the fish exceeds the tension of the line. The "tension" here mainly refers to the nodal tension of the line.