In Traditional Chinese Martial Arts and SCWC Secret Note, we use the terminology 子午線(Midnight-midday line), what today wck called “中線Centerline”. 子 is the midnight and 午 is midday. As a line(green line) to align them, then the line is called “子午線Midnight-midday line”.

The upper and lower scissor hands are used to identify the Midnight-midday line in the beginning of the three SCWC forms.