Bac Quan

Bac Quan, officially the Bac Quan National Capital District (𠄡ㄚㄟ ㄊウˇ ド 𠄡オˊㄟ ジア バˊㄟ 𠄡アン; Quận Thủ Đô Quốc Zia Bắc Quan) and colloquially referred to as BaQu, is the capital city of Dai Hoa. The urban area of Bac Quan is the fourth-largest city in Dai Hoa, covering an area of 243 km², with an estimated population of 3.9 million as of 2016. Greater Bac Quan, also known as the Chôm Valley, is an urban agglomeration of 7.6 million people as of 2018. It is among the fastest growing metropolitan regions in southern Escar, in both population and economic development.

Located on the banks of the major Thăng Long river, Bac Quan is enclaved within Long Biên Province, in the central valley of Dai Hoa. Bac Quan first developed around 1857 as a town serving the tin mines of the region and was a satellite town of the historical Hoaian capital Bắc Đô. During the colonial era, Bac Quan was selected as the site of a new colonial capital by the Yamataian administration, and construction began under engineers Matsunaga Tsuyoshi and Hironaka Juro. The new colonial capital was inaugurated on 13 February 1931 by Governor-General of Nanyōkuni Kanda Takeo. Following the Second Escar-Varunan War, Bắc Quan later became the capital of the Union of Dai Hoa before remaining the capital of Dai Hoa following the war of reunification.

Bac Quan is the cultural, financial, and political centre of Dai Hoa. Bac Quan has undergone rapid development in recent decades and hosts various venerable educational institutions and cultural venues of significance, including the Dai Hoa National University, the Mỹ Đình National Stadium, and the Dai Hoa National Museum of Fine Arts. Bac Quan is also home to the headquarters of the ruling Communist Party of Dai Hoa.

Bac Quan has a comprehensive road system supported by an extensive range of public transport networks, such as mass rapid transit, light rapid transit, monorail, commuter rail, public buses, hop on & hop off buses (free of charge) and airport rail links. Bac Quan is one of the leading cities in the world for tourism and shopping, being the 6th most-visited city in the world in 2019. The city houses three of the world's 10 largest shopping malls.

Etymology
Bắc Quan means Northern Gate, and refers to the city's location as the northern gate between the Dongsong and the Rattana Empires.