In many systems of gong fu there are usually different weapons.
Chen Taijiquan for instance has the straight sword (Jian), Broadsword (Dao), Spear (Qiang), big sword (Da Dao) and others...Although i don't train these, even Wing Chun has 2 weapons. The 6 1/2 point pole (Luk Dim Boon Gwun) and 8 chopping knives (Baat Jam Do).
I do know that these are used to help develop many things, structure, footwork, movement, internal energy and jing (power). As well as this they help condition the external body as well as the inside. This follows the principle of yin and yang. Have you ever tried lifting a Da Dao or Spear before? Let alone using it like the form... they are heavy and need alot of skill! Even though a skill is internal, you have to use your whole body... otherwise you won't have the correct connection... from my limited understanding so far anyway
Sorry i have never heard of the Taijiquan ball... but i'm sure there is a reason for it... If you ask over in the Southern Forum, i know Yau Kung Mun uses a heavy ball in their system. Maybe Fiercest Tiger can explain more?
good luck,
david
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Peace is dynamism. Peace is generosity.
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