Question: The Forbidden City has an East and a West gate, what are they known as, respectively?
About the article "Forbidden City", section "Walls and gates".

Candidate passages:
The Imperial City centres on the Forbidden City.
To the west of the Forbidden City are the Zhongnanhai and Beihai, which were surrounded by imperial gardens and collectively known as the Western Park.
To the south of the forbidden City are the Imperial Shrine of Family or Imperial Ancestral Temple (太庙) and Shrine of State (太社稷).
Further to the south was the "Corridor of a Thousand Steps", to either side of which are the offices of the various government ministries.
There are six gates in the walls of the Imperial City.
To the south is the Great Ming Gate (later renamed the Great Qing Gate, Gate of China).
Behind the Great Ming Gate was the Chengtianmen, (later renamed the Tian'anmen, "Gate of Heavenly Peace").
To either side of the Tiananmen were the Left Chang'an Gate and the Right Chang'an Gate.
To the east was Donganmen ("Gate of Eastern Peace"); to the west was the Xi'anmen ("Gate of Western Peace").
To the north was Houzaimen (later renamed the Di'anmen, "Gate of Earthly Peace").
Also housed in the Imperial City were a number of service buildings for the imperial palace, warehouses, Taoist temples, and a palace for the Imperial Grandson. 
The Forbidden City is surrounded on three sides by imperial gardens.
To the north is Jingshan Park, also known as Prospect Hill, an artificial hill created from the soil excavated to build the moat and from nearby lakes.
To the west lies Zhongnanhai, a former garden centred on two connected lakes, which now serves as the central headquarters for the Communist Party of China and the State Council of the People's Republic of China.
To the north-west lies Beihai Park, also centred on a lake connected to the southern two, and a popular park.
To the south of the Forbidden City were two important shrines – the Imperial Shrine of Family () and the Imperial Shrine of State (), where the Emperor would venerate the spirits of his ancestors and the spirit of the nation, respectively.
Today, these are the Beijing Labouring People's Cultural Hall and Zhongshan Park (commemorating Sun Yat-sen) respectively.
To the south, two nearly identical gatehouses stand along the main axis.
They are the Upright Gate () and the more famous Tiananmen Gate, which is decorated with a portrait of Mao Zedong in the centre and two placards to the left and right: "Long Live the People's Republic of China" and "Long live the Great Unity of the World's Peoples".
The Tiananmen Gate connects the Forbidden City precinct with the modern, symbolic centre of the Chinese state, Tiananmen Square.
While development is now tightly controlled in the vicinity of the Forbidden City, throughout the past century uncontrolled and sometimes politically motivated demolition and reconstruction has changed the character of the areas surrounding the Forbidden City.
Since 2000, the Beijing municipal government has worked to evict governmental and military institutions occupying some historical buildings, and has established a park around the remaining parts of the Imperial City wall.
In 2004, an ordinance relating to building height and planning restriction was renewed to establish the Imperial City area and the northern city area as a buffer zone for the Forbidden City.
In 2005, the Imperial City and Beihai (as an extension item to the Summer Palace) were included in the shortlist for the next World Heritage Site in Beijing. 
The Eight Gates were based roughly in the four cardinal and four intermediate directions of the compass.
Of the eight gates, the North, South, East, and West were known as the “Four Great Gates” (사대문), while the Northwest, Northeast, Southeast, and Southwest gates were known as the “Four Small Gates” (사소문).
Of the eight gates, two (West and Southwest) no longer exist.
Memorials are currently placed roughly where the West and Southwest gates once stood (July 2012).
There has been discussion and announcements about rebuilding the West Gate, but no construction has yet been undertaken (as of July 2012) for this gate.
On February 10, 2008, the South Gate was severely damaged in a fire set by an arsonist.
The gate was rebuilt over five years, and reopened to the public on May 4, 2013.
This gate has the designation of National Treasure No.
1 of South Korea.
Of the eight gates, the South and East gates are the largest, and both are located in busy market areas (Namdaemun Market and Dongdaemun Market, respectively).
Besides these eight cardinal gates, many other gates with important histories exist in Seoul, such as Gwanghwamun, the main gate of Gyeongbokgung Palace; Daehanmun, the main gate of Deoksugung Palace; Dongnimmun, also known as Independence Gate; and the remnants of Yeongeunmun, located next to Dongnimmun in Seoul's Seodaemun Independence Park. 
The rich and wealthy Hanseatic city of Lübeck felt the need in the course of the centuries to protect itself from outside threats with ever stronger walls and fortifications.
Three gates gave access to the city: the Citadel Gate in the north, Mill Gate in the south, and the Holsten Gate in the west.
To the east, the city was protected by the dammed Wakenitz River.
Here, the less martial Hüxter Gate led out of the city.
These city gates were initially simple gates which were repeatedly strengthened over time so that they eventually all had an outer, middle and inner gate.
Today, only fragments remain of these ancient city gates.
The gate now known as the Citadel Gate is the former Interior Citadel Gate; the Middle and Outer Citadel Gates no longer exist.
All three Mill Gates have completely disappeared.
The gate now known as the Holsten Gate is the former Middle Holsten Gate; there was also an (older) Inner Holsten Gate, an Outer Holsten Gate, and even a fourth gate, known as the Second Outer Holsten Gate.
So the history of the Holsten Gate is actually the history of four consecutive gates, although only one of them is left.
The names of the individual gates changed as a matter of course as their components emerged and disappeared.
The Middle Holsten Gate was once the Outer Holsten Gate before the gates on either side were constructed.
Still today there is a great deal of confusion about the names as one studies the historical record.
The four gates and their history are described below. 
Nowadays, the "intra muros" Suwon requires large entries for the modern roads required by visitors and inhabitants.
These large roads have been built during the period when the wall was down, and the 1975 reconstruction had no choice but to preserve these roads.
For three of them, the rempart walk has been rebuild as a bridge between two neighbor structures:   The North entry by a bridge between the North Gate Janganmun and its Eastern Gate Guard Platform.
The East entry by a bridge between the North-East Crossbow Platform and the North-East Observation Tower  The West entry by a bridge between the West Gate and the North-West Pavilion.
Additionally, two small underpass related to Mount Paldal were preserved.
They are situated respectively near the West Turret 1 and the South Turret.
Concerning the South entry, i.e.
the biggest one, a more radical solution has been used.
Four no more extent structures (the South-West and South-East Gate Guard Platforms, the South secret Gate and the South-East Observation Tower) were not rebuild at all and now the South Gate, Paldalmun, remains isolated from everything, like an insel in a flood of trafic.