Are both Yan'an and Hunchun in the same Chinese province ?
no
Hunchun
Hunchun is a county-level city in the Yanbian Korean Autonomous Prefecture, far eastern Jilin province, Northeast China.
 It borders North Korea (North Hamgyong province) and Russia (Primorsky Krai), has over 250,000 inhabitants, and covers 5,145 square kilometers.
 It was capital of Balhae/Bohai Kingdom between 785-793 as "Dongyang".
 The city's name Hunchun comes from the Manchu language meaning "borderland".
Yan'an
Yan'an (, ; is a prefecture-level city in the Shanbei region of Shaanxi province, China, bordering Shanxi to the east and Gansu to the west.
 It administers several counties, including Zhidan (formerly Bao'an), which served as the headquarters of the Chinese Communists before the city of Yan'an proper took that role.
Hunchun River
Hunchun River ( ), is a river located in the Yanbian Korean Autonomous Prefecture, in the Chinese province of Jilin.
 It is the tributary of the left bank of the Tumen River. Murong Chui
Murong Chui (; 326–396), courtesy name Daoming (道明), formally Emperor Wucheng of (Later) Yan ((後)燕武成帝) was a great general of the Chinese/Xianbei state Former Yan who later became the founding emperor of Later Yan.
 He was a controversial figure in Chinese history, as his military abilities were plain, but as he was forced to flee Former Yan due to the jealousies of the regent Murong Ping, he was taken in and trusted by the Former Qin emperor Fu Jiān, but later betrayed him and established Later Yan, leading to a reputation of him as a traitor.
 Further, his reputation was damaged in that soon after his death, the Later Yan state suffered great defeats at the hands of Northern Wei Dynasty's founder Emperor Daowu (Tuoba Gui), leading to the general sense that Murong Chui contributed to the defeats by not building a sound foundation for the empire and by choosing the wrong successor. East Manchuria Railway
The East Manchuria Railway (Japanese: 東満洲鉄道, "Higashimanshū Tetsudō"; Chinese: 東満洲鐵道, "Dōngmǎnzhōu Tiědào"; Korean: 동만주 철도 (Dongmanju Cheoldo) was a railway company in Manchukuo headquartered in Hunchun, Jilin Province.
 Its mainline ran from Hunyung in Korea on the South Manchuria Railway's (Mantetsu) North Chosen East Line (now Hambuk Line) to Panshi on the Manchukuo National Railway's Fenghai Line via Hunchun.
 From the mainline there were branchlines to Gangouzi and to Dongmiaoling. Wah Yan College, Kowloon
Wah Yan College, Kowloon (WYK; Traditional Chinese: 九龍華仁書院; Jyutping: gau2 lung4 wa4 jan2 syu1 jyun2, demonym: "Wahyanite", pl.: "Wahyanites") is an eminent Roman Catholic secondary school for boys run by the Chinese Province of the Society of Jesus.
 Located at 56 Waterloo Road, Yau Ma Tei, Kowloon, it is a grant-in-aid secondary school using English as the primary medium of instruction.
 It is often revered by the local community, together with its brother school Wah Yan College, Hong Kong, as one of the most elite and prestigious boys' schools in Hong Kong. Jilin–Hunchun Intercity Railway
Jilin–Hunchun Intercity Railway, also known as Ji-Hun Passenger Dedicated Line, is a high-speed railway in China's Jilin Province.
 It connects the provincial capital of Jilin City and the eastern provincial city of Hunchun near the border with Russia and North Korea.
 It will have a total length of 359 km of electrified double-track railways, built to the Grade 1 standard.
 Project construction started on October 30, 2010, with operations commencing on September 20, 2015.
 The railway has been described as "Dongbei's most beautiful railway" (due to the terrain it runs through) and "the fastest way to Vladivostok" (4 hours by train from Shenyang to Hunchun, plus 4 hours by bus from Hunchun to Vladivostok).
 Reflecting the border location of the city, the new train station has its sign in four languages: Chinese, Korean, Russian, and English.
 Future prospects could see the line extended into Russia to Vladivostok. Battle of Canhe Slope
Battle of Canhe Slope (參合陂之戰) refers to a battle in 395 where the Chinese/Xianbei state Later Yan, then ruling over northern and central China, had launched a punitive campaign against its former vassal Northern Wei, also of Xianbei extraction.
 Later Yan forces were led by its crown prince Murong Bao and enjoyed some initial successes, but after being frustrated by the containment strategy by Northern Wei's prince Tuoba Gui (the later Emperor Daowu), withdrew.
 Tuoba Gui then gave chase and crushed Later Yan forces at Canhe Slope.
 He captured a large number of Later Yan forces as captive, but in fear that releasing them would allow a future Later Yan campaign against Northern Wei, slaughtered them.
 The battle reversed the power relations between Later Yan and Northern Wei.
 After Later Yan's emperor Murong Chui (Emperor Wucheng) died in 396 and Murong Bao succeeded to the throne (as Emperor Huimin), Northern Wei would launch a debilitating campaign of conquest against Later Yan, and by 398 had captured most of Later Yan's territory, reducing Later Yan to a small regional state. Murong De
Murong De (; 336–405), name changed in 400 to Murong Beide (慕容備德), courtesy name Xuanming (玄明), formally Emperor Xianwu of (Southern) Yan ((南)燕獻武帝), was the founding emperor of the Chinese/Xianbei state Southern Yan.
 He was the son of Former Yan's founding prince Murong Huang (Prince Wenming) and younger brother to both Former Yan emperor Murong Jun (Emperor Jingzhao) and Later Yan emperor Murong Chui (Emperor Wucheng), and therefore was an imperial prince and general during the times of both states.
 After Murong Chui's son Murong Bao lost most of Later Yan's territory to Northern Wei, Murong De took troops under his own command south and established Southern Yan, which secured modern Shandong, but failed to expand further, and was destroyed by Jin Dynasty (265-420) after Murong De's death and succession by his nephew Murong Chao. Wah Yan College, Hong Kong
Wah Yan College, Hong Kong (WYHK; demonym: "Wahyanite", pl.: "Wahyanites") is a grant-in-aid secondary school in Hong Kong.
 Founded on 16 December 1919 by Tsui Yan Sau Peter (1889–1980), it is now a Roman Catholic secondary school for boys run by the Chinese Province of the Society of Jesus.