Question: ina Cargo Airlines uses the route structure of which major Chinese airline operating international, domestic and regional routes?

Context paragraphs:
Aeroquetzal: Aeroquetzal is a defunct airline formerly based at Guatemala La Aurora International Airport.  Flying only regional routes first, Aeroquetzal later became the first Guatemalan airline besides Aviateca to operate a short lived scheduled passenger flight to Los Angeles International Airport in 1991.  The flight existed for around one month only.  However, like for all other airlines operating in Guatemala, the most important route was the one from Guatemala City to Flores Mundo Maya International Airport near Tikal.  The airline ceased operations in 1992 due to financial problems.

China Eastern Airlines: China Eastern Airlines Corporation Limited (, colloquially known as 东航/東航) is an airline headquartered in the China Eastern Airlines Building, on the grounds of Shanghai Hongqiao International Airport in Changning District, Shanghai, China.  It is a major Chinese airline operating international, domestic and regional routes.  Its main hubs are at Shanghai Pudong International Airport and Shanghai Hongqiao International Airport, with secondary hubs at Beijing Capital International Airport, Kunming Changshui International Airport and Xi'an Xianyang International Airport.

China Cargo Airlines: China Cargo Airlines () sometimes as abbreviated 中货航, is a cargo airline with its head office on Hongqiao International Airport in Shanghai, People's Republic of China.  It is China's first all-cargo airline operating dedicated freight services using China Eastern Airlines route structure.  Its main base is Shanghai Hongqiao International Airport, with a hub at Shanghai Pudong International Airport.

Iraqi Airways destinations: Iraqi Airways Company, operating as Iraqi Airways is the national carrier of Iraq, headquartered in Baghdad One of the oldest airlines in the Middle East, Iraqi Airways operates 5 domestic and 10 international routes in Africa, Asia and Europe since having resumed operations in 2003, 7 others were suspended in between.  The airline was said to have ceased operations on 26 May 2010, partly due to claims for compensation from Kuwait arising out of the First Gulf War, but continues to operate domestic and regional routes till today.

Air Europa Express: Air Europa Express (previously Aeronova) is a Spanish regional airline.  It is a subsidiary of Globalia (which is also the parent company of Air Europa).  The airline is set to operate regional routes for Air Europa.  Globalia plans to have Air Europa grow and operate long-haul flights; and have Air Europa Express for short haul and regional routes to be more competitive and reduce costs.  The airline is not a part of Air Europa and therefore the staff of the airline will be totally independent from Air Europa.

Quikjet Airlines: Quikjet Cargo Airlines Pvt. Ltd., branded as Quikjet Airlines, is an all cargo airline based in Bangalore, India.  It was formed in 2007, promoted by AFL Pvt Ltd.  Switzerland-based Farnair picked up a 36.2% stake in the airline in February 2012, making AFL the second-largest shareholder with 20.8% stake in the carrier.  QuikJet had operated one of Farnair’s twelve ATR 72-200(F)s until March 2013 before temporarily closing shop in anticipation of a B737-400F.  In May 2015, India’s Foreign Investment Promotion Board (FIPB) approved Farnair’s plan to step up its stake in Quikjet Cargo Airlines from 50.93% to 72.59% in multiple stages involving a minimum total foreign direct investment of Rs. 14.4 Crores.  Quickjet plans to launch scheduled domestic cargo services using Boeing 737 aircraft.

Pacific East Asia Cargo Airlines: Pacific East Asia Cargo Airlines, Inc. is a cargo airline based in Pasay City, Philippines.  The carrier serves domestic services from the Philippines with two Boeing 727 freighter aircraft.  The airline also has an agreement on selected routes flown by Air Philippines.  PEAC was also an affiliate airline of TNT Airways, with PEAC operating TNT leased BAe 146 aircraft.

IAS Cargo Airlines: International Aviation Services Limited, trading as IAS Cargo Airlines from 1975, is a defunct wholly privately owned, independent British airline that was based at London Gatwick Airport in the United Kingdom.  It commenced operations in 1967 and went bankrupt in 1980, following a merger with London Stansted based Trans Meridian Air Cargo (TMAC) to form the short-lived British Cargo Airlines.

Hongtu Airlines: Yunnan Hongtu Airlines Co., Ltd., branded as Hongtu Airlines, is a Chinese airline operating domestic flights from its Kunming Changshui International Airport hub in Yunnan Province.  The airline launched operations in May 2016.

Transmeridian Air Cargo: Transmeridian Air Cargo (IATA: KK, ICAO: ·, Call sign: Transmeridian) was a British cargo airline that operated from 1962 until 1979 when it merged with IAS Cargo Airlines to form Heavylift Cargo Airlines.

Supporting paragraphs: China Cargo Airlines China Eastern Airlines
Answer: China Eastern Airlines