Is there any usage of subline and mother line in traditional fishing?

Traditional fishing also has a subline,

From the structure of the line set, the part of the lower end of the lead weight is equivalent to the subline part of the Taiwan fishing, and the overall state is a one-line structure.

With the diversification of fishing, the size of the line set can be changed by itself or due to the limitation of the fishing area. to facilitate the process of fishing.

To give a very simple example.

Fishing for grass holes, it is not possible that every rod will not hang up to the water plants under the water, right? How do you solve this example? Here's how. Tie an 8-ring at the bottom of the lead weight, in order to minimize the amount of loss by pulling off only the part of the rod below the 8-ring when it hangs up. The rod and mainline sections are all good. Gives you a better way to cope.

I love fishing grass holes in traditional fishing. (Long pole and short line method) using the above method. Of course, you will also encounter the above situation with the flush pole and line fishing method, so you can consider my response method.

There is no fixed method. The same applies to fishing.

They're all about communication. I'm not sure if you're going to be able to do that.