This book is devoted to the diagnosis, treatment and prescription of sheep diseases. This book focuses on various common diseases and frequently-occurring diseases (infectious diseases, parasitic diseases and common diseases) of sheep, briefly introduces the causes, symptoms and diagnosis methods of each disease in popular language, and then focuses on several treatment prescriptions or other treatment measures for the disease, and explains the relevant precautions when using drugs. The most prominent feature of this book is that, on the premise of briefly introducing diseases, it focuses on medication and prescription, and introduces the usage, therapeutic dosage and medication time of various drugs in detail, which is very intuitive and clear. Its purpose is not only to make professional veterinary technicians have a practical reference book, but also to make it easier for non-professionals (such as farmers) to choose simple treatment schemes according to the condition and condition of sheep disease.

In short, thinking from the perspective of field is thinking from the perspective of relationship. The field is mainly about the synthesis of various social forces and factors in a certain social space, which is expressed through the relationship network of specific actors. The soul of this field is the power contrast and its actual tension that runs through social relations (Gao Xuan, 2006: 139- 140). According to Bourdieu's analysis of intellectuals and literary field in About TV (2000:P44, 45, 47), the basic steps and methods of applying field theory include: 1. Determine the relationship between a field and a dynamic field, whether it is near or far, whether it is affected, and analyze all factors related to its position; Secondly, determine the relationship between spatial positions in a certain field, or the basic structural characteristics of the power pattern, that is, the overall objective power contrast relationship that constitutes the news field structure; Third, study and grasp the behavioral characteristics of actors/practitioners, and then explain them.

Southern Metropolis Daily 1995 started its trial publication, and 1997 officially appeared as a daily newspaper. It has been 13 years. Through its slogan 1996-2008, we can roughly grasp the changing track of this newspaper's positioning: from the voice of the public to the change that makes people progress, and then to the mainstream is power, China's choice. Its development process not only witnessed the rise and prosperity of Metropolis Daily in Guangzhou and even the whole country, but also represented the path and mode of transformation from Metropolis Daily to mainstream newspapers. On the basis of combing the development process of Du Nan for more than ten years, the author tries to analyze the historical construction, production characteristics and the process of striving for autonomy of its news field by using the field theory, and grasp the changing track of its power and spatial position in the news field.

To grasp the basic position and characteristics of a news field, we should not only describe its current space of power and capital distribution, but also review and grasp its historical construction process as a whole. Before the social reform and opening up in China in the late 1970s, the political function of mass media in propaganda was excessively strengthened, and the news field basically belonged to the political field, with obvious heteronomy and lack of autonomy.