Help me write an 800-word talk about my views and understanding of ancient buildings in China.

Ancient buildings in China used wood, brick and tile as the main building materials, and wood frame structure as the main structural mode. This structural mode is composed of columns, beams, purlins and other main components, and the joints between the components are equipped with tenons and mortises to form an elastic frame. There are three different structural modes of ancient wooden frame in China: hanging beam, span bucket and shaft. The hanging beam type is called "hanging beam type" because the beam is placed on the column and hung on the beam. This structure is often used in palaces, temples, monasteries and other large buildings. The bucket-piercing type is called bucket-piercing type because rows of columns are connected through purlins to form bent frames, and then connected through purlins. Mostly used in houses and smaller buildings. The well stem type is made of cross-stacked wood, hence its name, because the space it encloses looks like a well. This structure is relatively primitive and simple, and it is rarely used except in a few forest areas. Wood structure has many advantages. First, the load-bearing and envelope structure are clearly defined, the weight of the roof is borne by the wooden frame, the outer wall plays the role of shielding the sun, heat insulation and cold protection, and the inner wall plays the role of dividing the indoor space. Because the wall is not load-bearing, this structure gives the building great flexibility. Secondly, it is conducive to earthquake prevention and resistance. Wood frame structure is very similar to today's frame structure. Due to the characteristics of wood and the certain expansion space of the bucket arch and mortise and tenon used in the frame structure, the damage of the earthquake to this frame can be reduced to some extent. "The wall falls but the house does not collapse" vividly expresses the characteristics of this structure.

The superb skills of ancient architecture in China are generally handed down by craftsmen. However, craftsmen have low social status and few opportunities to receive good education. Although there are many classic works, as a group, they have not received social attention for a long time. People are natural and speak softly, and there are only a handful of professional works on architecture for thousands of years. Besides archaeological evidence, we are more interested in the splendid ancient buildings in China from literary works. The poem "There are thousands of spacious buildings in Qian Qian, and all the poor people in the world are happy" has not only become the sad pursuit of humanistic care in ancient China society, but also become the loudest hymn silently dedicated by generations of construction workers and craftsmen.

From another perspective, the study of ancient buildings in China should not only look at buildings, but also look at cities. Because the development of architecture is related to the social system, legal system, property distribution mode, religious belief, social culture, customs and population structure at that time, these factors can only be analyzed from the macro perspective of the city. Our ancient urban planning was very developed, and the basic ideas of urban planning have been discussed throughout the ages. Zhao, a doctor of economics at Fudan University, believes that the basic difference between ancient cities in China and pre-modern cities in Europe is that cities in China are consumption-oriented cities (consuming surplus products from rural areas, and paying no tribute), while cities in Europe are mostly production-oriented cities (exchanging products with rural areas, focusing on trade); Most cities in Europe originated from trade, while ancient cities in China originated from the need of governance. The city center of China is occupied by the government and yamen, while western cities are more centered on religious buildings and commercial buildings. If you don't wear colored glasses, China's classical urban planning did provide a kind of reassuring and reassuring urban space for the people at that time.