"Lead wire", "hairspring", "lead lead", "lead tape".
The strokes of running script are relatively fast, and the strokes echo each other and are connected by thin lines, which are called "pulling thread", "gossamer", "leading lead" and "leading belt".
"Leading wire" is also called "hairspring", "leading wire" and "leading belt". Calligraphy terminology. It refers to the fine strokes left between successive strokes due to the back and forth of strokes when writing stipples. It is as thin as a hair, strong and neat, and plays the role of calling up and down, and expressing the flow of energy, which can show the calligraphy skills.