We Chinese believe that taiji is the origin of all lives on Earth. Taiji comprises yin and yang, two types of vital energy. The five elements of wood, fire, earth, metal and water derive from yin and yang. These five elements correspond to, or affect, particular human organs. That is, the element of the fire corresponds to the heart, the wood to the liver, the earth to the spleen and the stomach, the metal to the lung and the water to the kidney. The combination of yin and yang gives birth to all lives on Earth. Taiji represents the harmonious state of balance between yin and yang. For a long time, the rest of the world was only aware of China's four major inventions: the compass, gunpowder, paper-making and movable-type printing.
Very few know about China's discovery of jingluo that exists in a human body. Jingluo is a system of internal main and collateral channels, regarded as a network of energy passages, along which acupuncture points are distributed. The existence of jingluo has been proved by using modern scientific methods at the Beijing Jingluo Research Center. The discovery of the existence of jingluo provides a strong support for the theories advanced in The Book of Changes and Huang Di's Classic of Internal Medicine.
几乎很少有人知道中国已发现了经络的存在。经络是指人体内血气运行通路的主干与分支网络，针刺穴位 散布其间。北京经络研究中心通过现代科学方法，已经证实了经络的存在。经络的发现无疑 是为《易经》和《黄帝内经》的理论提供了强有力的佐证。
The “standard of living” of a country means the average person’ s② share of the goods and services which the country produces. A country’ s standard of living， therefore， depends first and foremost on its capacity to produce wealth. “Wealth” in this sense is not money， for we do not live on ② money but on things that money can buy： “goods” such as food and clothing， and “services” such as transport and entertainment.
A country’s capacity to produce wealth depends upon many factors， most of which have an effect on one another. Wealth depends to a great extent upon a country’s natural resources， such as coal， gold， and other minerals， water supply and so on. Some regions of the world are well supplied with coal and minerals， and have a fertile soil and a favorable climate; other regions possess none of them.