Five Elements are also pertinent to nature. 五行也与自然息息相关。
the emperors’ hope of national stability 皇帝的希望——国泰民安
Yellow correspond with earth. 黄色对应土。
Five Elements are metal, wood, water, fire and earth.
The imperial colours in the Forbidden City are yellow,red, green, white and black.
Metal corresponds with white, wood corresponds withgreen，and water isrelated to black, fire is associated with red, and earth is linked to yellow.
The three-terraced marble of the three halls are white.
The Crown Prince's residences havegreen tiles because green was associated with wood, and thus growth.
Black is associated with water, sothe library at the Pavilion of Literary Profundity had black tiles.
Red, corresponding with fire, symbolises good fortuneand joy.
Yellow generates Yin and Yang,which implies that yellow is the centerof everything.
As the three halls of the Outer Court symbolised thesupreme imperial sovereignty, they erected above a 土-shaped terrace.
Wood is east, fire is south, metal is west, water isnorth and earth is centre.
4.6 Yin and yang
The Limitless (Wuji) producesthe delimited,
and this is the supreme ultimate (Taiji)
The Taiji produces two forms, (namedyin and yang)
The two forms produce fourphenomena,(named lesser yin, great yin, lesser yang, great yang.)
The four phenomena act on theEight Trigrams (bagua).
Yin and yang can transform into each other. 阴阳可以相互转变。
The south is yang while the north is yin. 南为阳北为阴。
Actually both Eight trigrams and Five Elements derivefrom yin and yang.
The odd number is yang while the even number is yin.
The Outer Court in the south is yang while the InnerCourt in the north is yin.
Lesser yin means there is yang in the yin domain.
The Palace of Earthly Tranquility can be viewed as greatyin.
The transition between great yin and lesser yin is theHall of Union while that between great yang and lesser yang is the Hall ofMiddle Harmony.
All these interpretations lead to the icon of Taiji.
Great yang the Hall of Supreme Harmony is at the top ofthe white area and the black eye in the white area is lesser yin, the Hall ofPreserving Harmony.
The white eye in the black area is lesser yang, thePalace of Heavenly Purity and the Palace of Earthly Tranquility is great yin atthe end of the black area.