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This is a military poet who imagines a heroic military life but has never been involved in a war. Please read this song "Zuoma Bianguan": "In the slanting light of the clouds and mountains, the lake is calm. Zuma Bianguan is wide, and there is no smoke for a while." The grassland, green mountains, and white clouds are all in this sunset. The windless lake is extremely calm. Only when a bird passes by will it cause a ripple, and then it will become calm again. There was no smoke in the vast border of the motherland for a while. In fact, a peaceful and prosperous age with smoke everywhere is a great thing for all people in the world. Therefore, when there was no war, the poet changed his career and returned to his hometown.

This is a novel about a postal merchant. The novel makes a panoramic scan and summary of the Chinese stamp trading market from 1978 to 2011 through the growth process of the four major stamp dealers: Tan Xiaolei, Hao Wenxue, Jiang Yuan and Hong Jianjun. The novel not only vividly explains the survival and development of the four major postal dealers, but also outlines their love and hatred in detail. The author closely focuses on the theme of "postal dealers" and expresses his understanding and perception of the Chinese postal market in the great era. As a professional postal dealer and stamp expert, the author is very familiar with the survival methods and transaction processes of the stamp market, and also has a clear understanding of the growth process of Chinese postal dealers. What stamps are, what the postal market is, and what postal dealers are, all are explained in this novel.

This book is based on the latest technical specifications, standards, and testing procedures. It mainly introduces the main content, principles, and methods of railway engineering inspection, focusing on the mature and widely used testing equipment, technology, and applications in engineering practice. The main contents include track static inspection technology, track geometric state and stiffness dynamic detection technology, rail damage detection technology, comprehensive line inspection trains, switch and seamless line detection and monitoring systems, track structure parameters and dynamic testing technology, and foreign high-speed railway engineering inspection technology. This book is a textbook for railway engineering majors in colleges and universities, and can also be used as a training and reference book for relevant professional and technical personnel.