Where is Yan 'an and which province does it belong to?

Yan 'an belongs to Shaanxi Province, located in the north of Shaanxi Province, the middle reaches of the Yellow River and the south-central part of the Loess Plateau. With a total area of 37,000 square kilometers, the city is known as the "Three Qin Lock Keys, Five thoroughfares". Yan 'an, known as pumice and Yanzhou in ancient times, is an important birthplace of the Chinese nation. Huangdi, the ancestor of mankind, once lived here, and it is the first mausoleum in the world-Huangdi Mausoleum, the ancestor of the Chinese nation: the location of Huangdi Mausoleum. During the Qin and Han Dynasties, Yan 'an belonged to Shang Jun and the Three Kingdoms, and Yan 'an was occupied by Hu Qiang. 1972, Yan 'an was renamed Yan 'an. Yan 'an landform is dominated by loess plateau and hills. Yan 'an City belongs to a warm temperate semi-humid arid climate zone, and the annual climate change is controlled by monsoon circulation. Yan 'an is the city with the largest preserved scale, the largest number and the most complete layout among the revolutionary base cities in China, and has the reputation of "Museum City of Chinese Revolution".