About the second principle
Everything is always changing.
Man when living is soft and tender, when dead he is hard and tough.
All animals and plants when living are tender and fragile;
when dead they become withered and dry.
The hard and said are parts of death.
The soft and tender are parts of live.
(Tao Te Tsjing)
The sea does not cease to grind rock.
Photo : Hugolorent
Things change.
Forever and forever everything flows and nothing stays.
The earth is always shifting.
Photo : Hugolorent
The light is changing, the temperature is changing.
The basic lesson of our relative universe is that nothing stays fixed.
The moon rises.
The Earth is spinning on its axis...
Photo : Hugolorent
and the sun travels with billions of other stars through the Milky Way Galaxy.
No Galaxy is sitting still.
Everything is changing.
We are changing.
Photo : Hugolorent
I am change. You are change. We are change.
Everything is always changing.
How do we deal with changes?

“Be the change you want to see in the World”
Mahatma Gandhi.

Everything is always changing.
All change is not growth, as all movement is not forward.
An internal martial artist poses the same
essential question as a sailor does:
“How do I deal with changes?”

"The wind blows where it will blow" (Chinese proverb)
We can change neither strength nor direction of the wind.
Nor can we change the altitude of the waves or the depth of the sea.
We can change the position of the sails and the direction of the rudder.
Yes we can.
But if we do not know where to sail to, then this will not be of any use to us.
This is Wuwei- Tzu-jan.
Everything is always changing.
Well, then.
The goal of Tai Chi Chuan should be to help the individual
to cultivate mental awareness and physical flexibility
using as many fields as possible to adapt to the changing needs of the moment.

Tai Chi Chuan: Yin-Yang changes in the hands and feet.
Nothing is permanent, except change.
Heracleitos
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Chen village.
We know all things are changing, but we act as if they are permanent.
We know things are impermanent, but we act as if they are permanent.
We have a problem.
Nature has no problem.
We have a problem.

Everything is always changing.
Water gives rise to plants and wood is created.
This is the creative interplay of the Taoistic philosophy of the 5 elements (Seng cycle)
Taoistic philosophy divides nature into 5 elements:
Wood, Fire, Earth, Metal and Water
These 5 elements represent 5 forces in nature.
Taoistic 'psychology-medicine' divides people into 5 types:
Wood, Fire, Earth, Metal, and Water.
But;
Eech person contains five elements (mixed personalities).
Each person has a positive and a negative side of his personality.
Yin-Yang
The creative Seng cycle: 
1° Wood represents the life force.
2° Wood burns and gives rise to fire.
3° From fire comes ashes (Earth)
4° Earth gives rise to Metal.
5° From the Earth-Metal Water springs up.
Water gives rise to plants and wood is created. This is the creative interplay of the 5 elements (Seng cycle).
The weakening cycle
1° Water weakens metal
2° Wood weakens water
3° Fire weakens wood
4° Earth weakens fire
5° Metal weakens earth
The destructive Ko Cycle: 1° Wood destroys Earth.
2° Earth destroys Water.
3° Water destroys Fire.
4° Fire destroys Metal.
5° Metal destroys Wood.
This is the destructive interplay of the 5 elements (Ko cycle)
1)

2)

The laws of the 5 Elements take on great significance to martial as well as to healing aspects of Tai Chi Chuan.
Yin Yang
Wood----------Liver Wood------Gall Bladder
Fire---------Heart Fire--------Small Intestine
Earth------------Spleen Earth-------Stomach
Metal-------Lung Metal------Large Intestine
Water------------Kidney Water------Bladder
Well then; if we stimulate the Kidney meridian(Water), the Liver(Wood) will also stimulated because water creates wood.
But (in the martial applications) if we destroy the Kidney .....Et cetera...
All things are one and everything is always changing
The five elements in Tai Chi Chuan:
Metal represents hardness and penetration.
As you move forward you act with the character of metal.
Wood represents flexibility, strength, yielding and growing.
Move backward with the character of wood.
Water represents flexibility, pliability and yielding.
Move gently to the left with the character of water.
Fire represents aggressiveness, uncertainty, great power.
Move to the right with the character of fire.
Earth represents stability, immobility, great power, motherhood,
the center, calmness and the origin.
When you remain in the center ,you adopt the nature of earth.
We should follow the Tai Chi principles of opposites:
When you move upward the mind must be aware of downward.
When you move downward, the mind must be aware of upward.
When moving forward, the mind thinks of moving backward.
When shifting to the left side,
the mind should simultaneously notice the right side.
When shifting to the right side,
the mind should simultaneously notice the left side.
The center is the
empty space. It’s a meeting and a
changing point.
Taoistic classics: About changes.