Gansu, referred to as "Gan" or "long", is the provincial administrative region of the people's Republic of China and the capital of Lanzhou. It is located in Northwest China, connecting Shaanxi in the East and Xinjiang in the west, overlooking Sichuan and Qinghai in the south, Ningxia and Inner Mongolia in the north, and Mongolia in the northwest. It is between 32 ° 11 ′ - 42 ° 57 ′ north latitude and 92 ° 13 ′ - 108 ° 46 ′ east longitude, with a total area of 425800 square kilometers.
Gansu has a long and narrow terrain, complex and diverse landforms. It is surrounded by mountains, plateaus, flat rivers, river valleys, deserts and Gobi. The terrain inclines from southwest to northeast. Gansu is located in the intersection of the three plateaus of the Loess Plateau, the Qinghai Tibet Plateau and the Inner Mongolia Plateau. The climate types include subtropical monsoon climate, temperate monsoon climate, temperate continental arid climate and plateau mountain climate from south to north.
By the end of 2018, Gansu Province had 12 prefecture level cities, 2 autonomous prefectures, 17 municipal districts, 5 county-level cities, 57 counties and 7 autonomous counties under its jurisdiction, with a permanent population of 26.3726 million, realizing a Gross Regional Product (GDP) of 824.61 billion yuan, of which the added value of the primary industry was 92.13 billion yuan, the added value of the secondary industry was 279.47 billion yuan, the added value of the tertiary industry was 453.01 billion yuan, and the ratio of the tertiary industry structure was 1.12 billion yuan ：33.9：54.9。 According to the resident population, the per capita GDP is 31336 yuan