The dance steps that break through the basic standard of basic dance steps and change are collectively called "variation dance steps", which is also the most basic standard dance step after variation; We call the special requirements and standards that are formed according to the requirements of "basic standards" to complete the variation dance steps or produce basic standards different from the basic dance steps "variation standards". In the three-step action series, gold, silver, bronze and fancy dance actions themselves have distinct dynamic characteristics. Among these 67 movements, except for the "supporting series, collar series and looking in the mirror series" (all of which are mainly manual), it should be said that the catwalk series, running series, gold, silver, bronze and fancy dance movements in the action series are definitely influenced by the basic standards, and the most influential one should be step by step. Even the "transposition step, forward progress, backward step and twist step" in basic footwork are contrary to this basic standard, but these steps generally exist in action series, gold, silver, bronze and fancy dance movements, and sometimes completely replace the basic step and push-pull step. If Dapeng spreads its wings, it is all pre-progress; There is also a lion rolling hydrangea, which is also based on previous progress; Another example is adventure rock climbing, sleeping beauty, catwalk and so on. So it is impossible to dance according to this basic standard. Therefore, "transposition step, forward progress, backward step and twist step" is based on the basic steps, but it has broken through the basic standards and changed, so it should not be included in the basic footwork. However, because they are widely and universally present in action series, gold, silver, bronze and fancy dance steps, we have to classify them as basic footwork. Broad sense of "stepping" and narrow sense of "stepping" narrow sense of stepping!