The territory around Mt Mian was known as Mianshang under the Zhou.[2] By the Jin, the territory was known as Dingyang and the settlement at Jiexiu proper as Pingchang.[3] Under the Northern Wei (4th–5th century), both became known as JiexiuCommandery.[3] Under the Tang, this was renamed Jiezhou AD618–627.[3]
Mianshang was supposedly set apart by Duke Chong'er to endow sacrifices for his retainer Jie Zhitui c. 636BC. The early histories state that Jie had loyally followed Chong'er in exile around China for 19 years but, when Chong'er was installed as duke of Jin by a Qin army, Jie had chosen to retire as a hermit rather than debase himself by asking for favors.[4][5][6][7][8] In time, this caused him to be seen as a Taoistimmortal.[9] Later legend embellished the tale, having Jie save Chong'er from starvation[citation needed] by cooking a soup made from meat from his own thigh[10][11] only to be killed when Chong'er listened to advice from Jin courtiers that the way to drive him out of the mountains was to light a forest fire.[12] The idea was that Jie's duty to his mother would overcome his pride and they would flee together;[13] instead, their corpses were found days later beneath a willow.[13][12]Temples were erected in Jie's honor[citation needed] and, by the Han, the people of Shanxi tried to curry favor with his spirit by observing a Cold Food Festival in the dead of winter.[14][15][16] They ignored repeated attempts to ban it[15][17][18][19][20] although, as it moved to spring[21] and spread throughout China,[22][23] it eventually developed into the present-day Tomb-Sweeping Festival.[24][25]
Jiexiu experiences a semi-arid climate (Köppen climate classificationBSk). Spring is dry, with frequent dust storms, followed by early summer heat waves. Summer tends to be warm to hot with most of the year's rainfall concentrated in July and August. Winter is long and cold, but dry and sunny. Because of the aridity, there tends to be considerable diurnal variation in temperature, except during the summer. The monthly 24-hour average temperature ranges from −4.0 °C (24.8 °F) in January to 24.6 °C (76.3 °F) in July, while the annual mean is 11.18 °C (52.1 °F). With monthly percent possible sunshine ranging from 49% in July to 60% in May, the city receives 2,425 hours of bright sunshine annually.
Climate data for Jiexiu, elevation 746 m (2,448 ft), (1991–2020 normals)
Holzman, Donald (June 1986), "The Cold Food Festival in Early Medieval China", Harvard Journal of Asiatic Studies, vol. 46, Cambridge: Harvard University Press, pp. 51–79, doi:10.2307/2719075, JSTOR2719075.
Huan Tan (1975), Pokora, T. (ed.), Hsin-lun and Other Writings, Michigan Papers in Chinese Studies, No. 20, Ann Arbor: University of Michigan Press.
Lan Peijin; et al. (1996), "Carrying His Mother into the Mountain[s]", Long Corridor Paintings at [the] Summer Palace, Beijing: Foreign Languages Press, p. 115.