In praise of the four great inventions of China, the ancestor of gunpowder is not tired of refining alchemy, and the earth is born with nitrate and sulfur charcoal. Relying on the sky, the whole world is included in the small compass.
On the day when the five continents woke up from the dream, China has been flying for a hundred years. Cai Lun's papermaking skills have turned into a magical inheritance from the ancestors, and the treasures of the study have been passed down from generation to generation.
Thousands of years. How rich is the merchant? He has not paid Cai Gong's patent money. Bi Sheng's movable type printing clay is married to firewood, and it is so happy to give birth to a spiritual child.
Thanks to the common people for passing on the road, the common people have no intention of singing many odes
Wen Tianxiang of the Song Dynasty "sailed to the North Sea with the wind for several days and returned to the head of the Yangtze River. My heart is like a magnetic needle, and I will not rest until the direction is pointed."
Zeng Fengcheng of the Song Dynasty wrote Luo Chunxin: "...Fortunately, there is a Sinan handle in the car, which can guide you when you are lost."
In the Jin Dynasty, Yang Fang wrote five poems on acacia: "The magnet leads the long needle, and the scorching smoke under the sun...".
In the Tang Dynasty, Xu Xuan and Jiangxi Xiao Shaoqing sent two poems to each other: "I am ashamed of Sinan when I die on the Yangqi Road, and I have been separated for three years...".
Dai Shulun of the Tang Dynasty presented it to the people of Xushan: "...the needle shines from the compass, and the stars are still like the long night in Gongbei...".
In the Song Dynasty, Peng Guinian sent a letter to Huang Shangbo and Jian Zhan Yuanshan, "...the torrential waves will lead you to the wrong place, don't look at the compass"