The enrollment number for Xuan Cheng No.2 High School is not readily available without specific data from the school or local educational authorities. However, it is common for high schools in China, including Xuan Cheng No.2, to have a student body ranging from several hundred to over a thousand students. This estimate is based on the typical size of high schools in the country, which often serve a local community and may include students from neighboring areas.

The enrollment size of a high school can be influenced by several factors. First, the geographical area served by the school can affect the number of students it enrolls. Schools in urban areas, for instance, may have a larger student population due to higher population density and more families with school-aged children. Conversely, schools in rural areas might have a smaller enrollment due to lower population density and fewer families in the area.

Additionally, the educational policies and resources available in the region can impact enrollment. In regions where there is a strong emphasis on education and where resources are abundant, schools may attract more students. This can lead to higher enrollment numbers. Furthermore, the reputation of the school, including its academic performance and extracurricular offerings, can also influence the number of students it enrolls.

For a more accurate figure, one would need to consult the school's official records or local educational statistics. According to data from the Ministry of Education in China, the average enrollment in high schools across the country has been increasing over the past decade, reflecting the growing importance of secondary education in the country's development. However, specific numbers for Xuan Cheng No.2 High School would require direct access to the school's enrollment data.