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This book is a documentary literary work about Chinese law professor Chen Guangwei. Chen Guangwei was born in a war-torn era. He went through many hardships as a young man, and with the help of his teachers and friends, he completed his studies and was admitted to the Beijing Institute of Political Science and Law, the first political and legal institution of higher learning in New China. When he first entered society and was sent to work in the frontier for 22 years, he still built houses and bridges for the people with the "tile-knife spirit" and kept his faith. After being rehabilitated at the age of 50, he returned to the podium. Faced with the gap in China's economic law, he created the first economic law teaching system based on natural ecological protection, and promoted the national legal circles to jointly compile the first "Economic Law" textbook, laying the foundation for the rule of law in China's market economy. In his later years, he devoted himself to judicial practice and assisted case arbitration with his eloquence, and was known as the "arbitrator with special contribution". Throughout his life, he rose from adversity to pioneering the rule of law. He built the cornerstone of China's legal system with a "tile knife" and became a model for legal education and practice.

In the mid-20th century, a strange hair loss disease occurred in Shanshuiwan Village in the mountainous area of ​​western Hubei, China. Scientist Professor Guang Xi investigated and found that it was selenium poisoning deep in the earth's crust. An environment high in selenium is harmful to health, but selenium is an essential element for the human body. The scientific research team determines safe intake through experiments, develops selenium-rich agricultural products and medicines, and achieves complementarity between high and low selenium areas. After the villagers relocated, they cultivated selenium plants to promote the market, which led to the rise of the selenium industry and was even used for cancer treatment. Local scientific and technological workers and returned talents have promoted the development of selenium resources, formed a medicinal and food industry chain, promoted human health, and made the selenium land in western Hubei a hot spot for scientific research and industry.