1% 2C2% 2C3% 2C4% 2C5 refers to hardware. For hardware, metal, wood, water, fire, and earth are also widely used in the world. Gold can be used as a casting tool, which is tough and durable, and is often used as a material for weapons and utensils; wood can be used as a pillar or as firewood for people to live and heat; water is the source of life, nourishing all things, irrigating fields, and drinking for people; fire can cook food, disperse cold, and smelt metals; soil nourishes all things. It is the foundation of farming and mulberry, and it is also the foundation for building cities and houses.
Hardware is indispensable for people's livelihood. However, hardware also has its own characteristics and taboos. If used properly, it can benefit all people; if used improperly, it may also cause disaster. It is because the ancients studied the use of hardware carefully and followed the way of nature.
As for the water tin referred to in 6, the water tin is a kind of metal, which is soft, has good ductility and conductivity. It is mainly used to make alloys, such as bronze, which is an alloy of copper and tin. It is hard and corrosion-resistant, and is often used in casting ritual weapons, weapons, etc. It can also be used for welding, because its melting point is low, it can firmly connect metal parts.
Water tin is of great value in industry and life. However, the mining and use of water tin should also pay attention to environmental protection and resource protection. If over-exploited, it will not only damage the ecological environment, but also lead to resource depletion. Therefore, the ancients also adhered to the principle of moderation and rationality in the utilization of water and tin to ensure its sustainable development and benefit future generations.

The five things referred to by 1% 2C2% 2C3% 2C4% 2C5 are water, fire, wood, metal, and earth. These five are the basic elements of heaven and earth, and each has its own unique physical properties.
Water is fluid and liquid at room temperature, colorless, odorless, and transparent. Under its moisturizing nature, it can nourish all things and is indispensable for the survival of life. Water has three states of change. When cold, it condenses into ice, and when heated, it turns into steam.
Fire has the characteristics of heat and light, and has no fixed shape and volume. Fire requires oxygen and combustibles to burn, and can release a lot of heat and light energy. In human life, it can be used for cooking, heating, and smelting metals.
Wood has a solid texture and flexibility. It is derived from plants, has a textured and fibrous structure, and can grow and multiply. Wood can be used as a building material, making utensils, and is also an important energy source.
Gold has a hard texture and a metallic luster. Most of them have good electrical conductivity, thermal conductivity, and ductility. Gold can be melted and cast, and is used to make various tools, weapons, and decorations.
Soil is a loose collection of particles, which has certain viscosity and plasticity. Soil can carry all things, providing nutrients and support for plant growth, and is also used in construction and pottery.
As for mercury referred to in 6, it is the only liquid metal at room temperature, with a silver metallic luster. Mercury has high density, good fluidity, and is volatile. Mercury is toxic and can cause damage to the human nervous system, kidneys, etc. Mercury has relatively stable chemical properties and can be used to make thermometers, sphygmomanometers and other instruments.

1% 2C2% 2C3% 2C4% 2C5 refers to the five elements of gold, wood, water, fire and earth. The five elements are the basic elements of all things, each with its own characteristics. Gold, hard and chilling, with the nature of convergence and settlement; wood, winding up, the main growth and extension; water, moisturizing down, with the ability of cold and moisturizing; fire, hot and upward, the main temperature rising; soil, long and nourishing, the mother of all things, with the quality of biochemical bearing.
As for 6, here it refers to the "bath" involved in the combination of "water" and "valley", that is, water. The chemical properties of water are unique. It is a colorless and odorless liquid at room temperature and pressure. It has a high specific heat capacity and can absorb or release a large amount of heat with small temperature change. Water is a good solvent, and many substances are soluble in it. This property is crucial in life activities and chemical reactions. Water can also be ionized. Although the degree is weak, it has a profound impact on many chemical processes. In redox reactions, water can be used as an oxidizing agent, the electrons are reduced, and the lost electrons are oxidized.
The water involved in the word "bath" plays a key role in many chemical phenomena and reactions. It participates in many acid-base neutralization, hydrolysis and other reactions, which is of great significance for maintaining the balance and stability of the chemical reaction system. Its unique chemical properties make it a source of life and indispensable in the chemical processes of nature and human life.

The first is millet, the second is rice, the third is rice, the fourth is tea, and the fifth is hemp. The six animals are cattle, sheep, goats, dogs, and hogs.
The first heavy material, the five-year-old, must be excellent, the damage of disease and drought resistance can only be expected to be harvested.
The six animals are also healthy and sick, the blood is correct, the growth is rapid, and the meat, milk, hair, and strength are all excellent.
The second time, the five-year-old order, the spring and autumn harvest is irreversible. In the spring ploughing, deep plowing and raking, so that the soil can be sparse, so that the buds of the seeds can take root. In summer, the ploughing, diligent removal of the grass, irrigation and fertilization, to help it flourish. During the autumn harvest, and the harvest, do not let the food rot on the field. The six animals also eat and live according to the season, and the cold warms up, and the heat falls, so as to ensure their health.
Furthermore, it is necessary to prevent diseases. Five are prone to drought, hail, and hail, so as to prevent and prevent. Repair water conservancy to prevent drought; prepare to prevent hail; research methods of disease prevention and control to ensure crop health. The six animals are also often infected with diseases, and it is advisable to prevent diseases regularly, keep the pens clean, and immediately isolate and treat sick animals to avoid infection.
In addition, the way of labor should not be ignored. Planting five or six animals requires diligent people to take care of them carefully. If you want to do good work, you must first sharpen your tools, and you must also have excellent tools and animal husbandry tools to improve the efficiency of life.
Therefore, the life of five or six animals is a major factor in people's livelihood. Only by paying careful attention to the aspects of materials, plants, disease prevention, and labor can you achieve good results and ensure the food and clothing of the people.

Those who have tasted and heard the five elements, such as gold, wood, water, fire, and earth, all have a great impact on the life of all things and the transportation of heaven and earth. Today's five lakes, or the ancient referred to areas, zhao, Peng Li, green grass, and Dongting, the land of the five lakes has vast waters, nourishing living beings, and is of great significance to the balance of ecology.
As for the Six Rivers, the Yangtze River, the Yellow River, the Pearl River, the Songhua River, the Liao River, and the Haihe River. Rivers are rushing and moisturizing the earth, but their impact on the environment has advantages and disadvantages.
The advantage is the ability to irrigate. The water of rivers is the foundation of agriculture and mulberry, the fields depend on it to nourish, the grains can be abundant, and the people can be full. Gu Yun: "Water conservancy is the foundation of agriculture." If there is no irrigation of rivers, thousands of miles of fertile wilderness may become wasteland, and people's livelihood will be difficult.
The second time is the convenience of boats. The waterways of the Six Rivers are vertical and horizontal, and they are the key roads for the circulation of goods. Merchants from south to north rely on this for commerce. This not only promotes the prosperity of commerce and trade, but also enables the exchange and integration of cultures from all over the world. It has contributed to the evolution of civilization.
And rivers are the habitat of many living creatures, and fish, shrimp and aquariums multiply in them, forming a unique ecosystem and enriching the diversity of organisms.
However, if there is a continuous rainstorm, the rivers flood, the embankments collapse, the fields are flooded, and people and animals are injured, this is the damage of the flood. Throughout the ages, floods have been frequent, and the people have suffered unspeakably.
In this world, with the rise of industry, wastewater is discharged into the rivers, causing the water quality to deteriorate, aquatic life is endangered, and the ecological environment is destroyed. Although the six rivers are a gift from heaven and earth, if they are not well protected, their benefits will gradually disappear and the harm will increase day by day. It is time to protect the rivers, lakes and seas with a heart of awe, so that the ecological balance and all things coexist harmoniously.