Wing Tsun is one of the most effective defense systems in the world and can be learned by anyone without having to be an acrobat. The techniques are energy efficient and use only what is necessary to achieve the greatest possible benefit.
There are different hand and arm techniques for a wide variety of applications.
A lot of value is placed on the tactile recognition of intentions and energies [this is about real energy directions from physics] in order to then be able to process them accordingly.
As a result, you are not dependent on visual impressions, but on touch.
The body recognizes this better than via the visual channel anyway.