China Ya 'an is there.

Ya 'an, located at the intersection of Sichuan-Tibet and Sichuan-Yunnan highways, is the gateway and the only way to the ancient Southern Silk Road, and was once the capital of Xikang Province. It is a famous historical and cultural city and an emerging tourist city in Sichuan Province, and is known as the "Rain City". Aba Tibetan and Qiang Autonomous Prefecture in the north, Ganzi Tibetan Autonomous Prefecture and Liangshan Yi Autonomous Prefecture in the west and south, and Chengdu, Meishan and Leshan in the east. The urban area is an irregular figure with long north-south and narrow east-west. Area 153 14 square kilometers, population 1530,000, area code 0835, postal code 625000, license plate number Chuan T, Yucheng District and 7 counties including Lushan, Shimian, Mingshan, tianquan county, Yingjing, Baoxing and Hanyuan are set up. The municipal government is stationed in Yucheng District.

In ancient times, this city was A Qiang in Tsing Yi, and Yandao County in Qin State (including today's Jing Rong and Yucheng District) belonged to Shu County. In the Western Han Dynasty, the migration counties (now Manchu), Hu Niu County (now Hanyuan) and Qingyi County (now Mingshan and Lushan) were added. In the Three Kingdoms, Shu Han settled in the county, and in Mengshan County in the Western Wei Dynasty. After the Sui Dynasty, the capital was moved to Yazhou. After the Revolution of 1911, Ya 'an Prefecture of Qing Army belonged to the 17th administrative supervision area of Sichuan and then to the 2nd administrative supervision area of Xikang Province. * * * In the early Republic of China, it was Ya 'an District of Xikang Province. 1955 Xikang province was revoked and returned to Sichuan province as a special zone. Later, in 2000, it was changed to a provincial-level city.

Qionglai Mountain in the north of the city extends southward to Erlang Mountain in the west, and connects with Jin Jia Mountain in the north and south. In the southwest, the snow-capped mountains extending from northwest to southeast extend all the way into the city. There are Daxiangling and Xiaoxiangling in the south and southeast. The topography of the city is a geographical pattern with high terrain in the north, west and south and low terrain in the east. The extremely high mountains (above 5000 meters above sea level) in the southwest and northwest marginal areas are covered with snow all year round, among which the Wuming Peak at the junction of asbestos, Kangding and Kowloon is 5793 meters above sea level, which is the highest peak in this city. High mountains (3500 ~ 5000m above sea level) are distributed in Baoxing, the northwest of Tianquan and the southwest of asbestos, with a relative height difference of 1000 ~ 2000m, accounting for 2 1% of the city's total area. Zhongshan (elevation 1000 ~ 3500m) is distributed in all counties, accounting for 69% of the total area, with a wide range and a large area. Low mountains (500 ~ 1000m above sea level) only account for 4%, mainly distributed in Yucheng District and famous mountains. Hills and flat dams account for 6% of the total area, mostly on both sides of the valley, with the largest number on both sides of Qingyi River. The exit at the eastern end of the valley is 627 meters above sea level, which is the lowest point of the city.

The main rivers, Dadu River and Qingyi River, belong to Minjiang River system, with nearly 100 tributaries. Dadu River has Song Lin, Nanyajiang and other important tributaries, and Qingyi River has Baoxing River, Yingjing River and Duke of Zhou (Ya 'an River).

The climate of this city belongs to subtropical humid monsoon climate type. Except for high mountains, there is generally no severe cold in winter, no heat in summer, and warm and dry in spring. Precipitation is concentrated in summer, and it rains many nights, but there is a significant difference between the north and the south of Daxiangling. Take Yucheng District and Hanyuan District as examples: the former has an annual average temperature of 16.2℃ and the latter has an annual average temperature of 18.0℃. The former has a monthly average temperature of 6.65438 0℃ and the latter has a monthly average temperature of 8.3℃. The former has an average temperature of 25.4℃ in July and the latter has an average temperature of 26.0℃ in July. The former sunshine 1005 hours, the latter sunshine145/kloc-0 hours. The frost-free period is 280 ~ 3 10 days in the valley belt of the city, and the annual precipitation is significantly different between north and south. Most of the northern part is between 1250~ 1750 mm, and the southern part is only 740~760 mm In some years, the precipitation in Yucheng District and Tianquan District can be as high as 2000 mm, which is the rainy center of Sichuan, so it is called "Rain City".