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The overall treatment rate of rural domestic sewage in Northwest China is lower than that of national average level. In order to effectively improve regional rural sewage treatment capacity and enhance management level of water environment during local villages，the governments of northwest provinces （autonomous regions） have successively promulgated the discharge standards for pollutants of rural domestic sewage treatment. By comparing the discharge standards of rural domestic sewage in Shanxi Province，Shaanxi Province，Gansu Province，Qinghai Province，Ningxia Hui Autonomous Region，Xinjiang Uygur Autonomous Region and Inner Mongolia Autonomous Region with Pollutant Discharge Standards of Urban Sewage Treatment Plants and the Water Quality Standards of Farmland Irrigation，it is revealed that the standard classification of the seven northwest provinces （autonomous regions） is mainly based on the surface water environmental quality standards and the scale of treatment facilities. In addition，the control index selection of local standards is basically consistent with the pollutant discharge standards of urban sewage treatment plants while the standard limitation is relatively loose. Meanwhile，the third level of the seven Northwest provinces（autonomous regions） is suitable to the water quality requirements of farmland irrigation，of which the Inner Mongolia Autonomous Region，Gansu Province and Xinjiang Uygur Autonomous also specified clear provisions. Moreover，with in-depth summary and analysis of the discharge standards of rural domestic sewage in northwest China，the thinking for the priority selection of the discharge standards for pollutants of rural domestic sewage treatment would be guided to the suitable discharge standard for the treatment of rural domestic sewage. In addition，It will provide not only ideas for the applicable technical system and treatment mode of rural domestic sewage treatment in the arid region of northwest China，but also for the contributions to improve the policy decision-making level on rural water environment treatment of local governments.

Aiming at the problem of the types of male wedding dresses for Huaxia noble class, the male wedding dress of the upper class of Huaxia nationality in Zhou dynasty was deduced and sort out by combining relevant historical documents and graphic materials. The results show that in terms of cultural background and formation conditions, wedding dress is a ceremonial clothing culture that was gradually improved during the Zhou dynasty under the influence of Confucianism, of which formation and development were closely related to the ancient dressing system and sacrificial culture at that time; In terms of clothing types, it explains that men from the aristocratic class of the Huaxia ethnic group in the Zhou dynasty used different styles of wedding dresses based on their identity and status. The upper class of ancient scholar-bureaucrat generally wear Mianfu, with crowns and red shoes in the wedding ceremony. The patterns of clothing and the number of hanging bead strings on the crowns increase as the wearer's identity level increases; The new bridegroom belonging to the scholar-bureaucrat class often wears Juebianfu, with a ceremonial hat and ceremonial shoes, whose clothes are not adorned with any decorations. [ABSTRACT FROM AUTHOR]