ArticleslgStudy

engineering

Tiananmen

Tiananmen is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Tiananmen rather than just read about it. In short: The Tiananmen , also Tian'anmen, is the entrance gate of the Forbidden City imperial palace complex and Imperial City in the center of Beijing, China. It is widely used as a national symbol.

Tiananmen — main illustration
Tiananmen — illustration

Key takeaways

  • Tiananmen belongs to engineering; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Tiananmen to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Tiananmen from memory before moving on to harder problems.

Reference excerpt

The Tiananmen , also Tian'anmen, is the entrance gate of the Forbidden City imperial palace complex and Imperial City in the center of Beijing, China. It is widely used as a national symbol. First built in 1420 during the Ming dynasty, Tiananmen was the entrance to the Emperor's residence, through which all visitors to the palace walked. In 1949, Mao Zedong proclaimed the People's Republic of China from the balcony, which now features a large portrait of him. Tiananmen is located to the north of Tiananmen Square, and is separated from the plaza by Chang'an Avenue.

Name The Chinese name of the gate (天安门/天安門), is made up of the Chinese characters for "heaven", "peace" and "gate" respectively, which is why the name is conventionally translated as "Gate of Heavenly Peace". However, this translation is somewhat misleading, since the Chinese name is derived from the much longer phrase "receiving the mandate from heaven, and pacifying the dynasty". (受命于天,安邦治國). The Manchu translation, Abkai elhe obure duka, lies closer to the original meaning of the gate and can be literally translated as the "Gate of Heavenly Peacemaking". The gate had a counterpart in the northern end of the imperial city called the Di'anmen (地安門, Dì'ānmén; Manchu: Na i elhe obure duka), which may be roughly translated as the "Gate of Earthly Peace".

Gate

History

The gate was originally named "Chengtianmen" (traditional Chinese: 承天門; simplified Chinese: 承天门; pinyin: Chéngtiānmén), or "Gate of Accepting Heavenly Mandate" in the Ming dynasty. It has subsequently been destroyed and rebuilt several times. The original building was first constructed in 1420, and was based on an eponymous gate of an imperial building in Nanjing. The gate was completely burned down by lightning in July 1457. In 1465, the Chenghua Emperor ordered Zigui (自圭), the Minister of Works, to rebuild the gate. Thus, the design was changed from the original paifang form to the gatehouse that is seen today. It suffered another blow in the war at the end of the Ming dynasty, when in 1644 the gate was burnt down by rebels led by Li Zicheng. Following the establishment of the Qing dynasty and the Manchu conquest of China proper, the gate was once again rebuilt, beginning in 1645, and was given its present name upon completion in 1651. The gate was reconstructed again between 1969 and 1970. The gate as it stood was by then 300 years old, and had badly deteriorated, partly due to heavy usage in the 1950s and 1960s. As the gate was a national symbol, Zhou Enlai ordered that the rebuilding was to be kept secret. The whole gate was covered in scaffolding, and the project was officially called a "renovation". The rebuilding aimed to leave the gate's external appearance unchanged while both making it more resistant to earthquakes and installing modern facilities such as an elevator, water supply, and heating system.

Description

The building is 66 meters (217 ft) long, 37 meters (121 ft) wide and 32 meters (105 ft) high. Like other official buildings of the empire, the gate itself has unique imperial roof decorations. Two lions stand in front of the gate, and two more guard the bridges. In Chinese culture, lions are believed to protect humans from evil spirits. Two stone columns, called huabiao, each with an animal (hou) on top of it, also stand in front of the gate. Originally, these installations were designed for commoners to address their grievances by either writing or sticking petitions on the columns. However, the examples in front of the Imperial City were purely decorative, and instead connoted the majesty of the imperial government. The western and eastern walls have giant placards; the left one reads "Long Live the People's Republic of China" (中华人民共和国万岁; Zhōnghuá Rénmín Gònghéguó wànsuì), while the right one reads "Long Live the Great Solidarity of the World's Peoples" (世界人民大团结万岁; Shìjiè rénmín dà tuánjié wànsuì). The right placard used to read "Long Live the Central People's Government" (中央人民政府万岁; Zhōngyāng Rénmín Zhèngfǔ wànsuì) for the founding ceremony of the PRC, but later it was changed to "Long Live the Great Solidarity of the World's Peoples". Both placards were changed to use simplified Chinese instead of traditional Chinese characters in 1964. The phrasing has significant symbolic meaning, as the phrase used for long live, like the Imperial City itself, was traditionally reserved for Emperors of China, but is now available to the common people. The reviewing stands in the foreground are used on International Workers' Day (May 1) and on the National Day (October 1) of the People's Republic of China. In front of the stands is the Imperial City's moat, still filled with water but now containing decorative illuminated fountains. In ancient times, the Tiananmen was among the most important gates encountered when entering Beijing's Imperial City along with the Yongdingmen, Qianmen, the Gate of China. Proceeding further inward, the next gate is the 'Upright Gate', identical in design to the Tian'anmen; behind it is the southern entrance of the Forbidden City itself, known as the Meridian Gate.

Portrait

History Because of the gate's position at the front of the Imperial City, and the historical events that have taken place on Tiananmen Square, the gate has great political significance. In 1925, when China was ruled by the Nationalist government, a large portrait of Sun Yat-sen was hung at the gate after his death. In 1945, to celebrate the victory over Japan, Chiang Kai-shek's portrait was hung. On July 7, 1949, portraits of Zhu De and Mao Zedong were hung to commemorate the Second Sino-Japanese War. Since the founding date of the People's Republic of China on October 1, 1949, a singular portrait of Mao has been hung on the gate. The portrait is replaced annually before National Day. On only one occasion, on March 9, 1953, it was temporarily replaced by a portrait of Joseph Stalin to commemorate his death. In 2011, Alexander Pann Han-tang, chairman of the Asia Pacific Taiwan Federation of Industry and Commerce, and a close friend of Taiwanese president Ma Ying-jeou, proposed that the picture of Sun Yat-sen be displayed at Tiananmen Square instead for the 100th anniversary of the founding of the Republic of China. However, this proposal was rejected.

… excerpt ends here. Continue reading the full article.

Illustrations

Tiananmen: Tian'anmen in 2020
Tian'anmen in 2020
Tiananmen illustration
Tiananmen illustration
Tiananmen illustration
Tiananmen illustration

Worked examples

Example 1 — a first encounter with Tiananmen

Start with the simplest possible case. Write down what Tiananmen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Tiananmen before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Tiananmen ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Tiananmen

In research
Tiananmen appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Tiananmen in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Tiananmen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 15th-century establishments in China, 1650s establishments in China, Buildings and structures completed in 1420, so understanding it makes those chapters shorter.
In everyday life
Look for Tiananmen outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Tiananmen” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Tiananmen in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Tiananmen means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Tiananmen out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Tiananmen in simple terms?

The Tiananmen , also Tian'anmen, is the entrance gate of the Forbidden City imperial palace complex and Imperial City in the center of Beijing, China. It is widely used as a national symbol.

Why does Tiananmen matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Tiananmen?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Tiananmen.

Tags

  • 15th-century establishments in China
  • 1650s establishments in China
  • Buildings and structures completed in 1420
  • Buildings and structures completed in 1651
  • Dongcheng, Beijing
  • Forbidden City
  • Gates of Beijing
  • Major National Historical and Cultural Sites in Beijing
  • Ming dynasty architecture
  • National symbols of China
  • Qing dynasty architecture
  • Tiananmen Square

Keep exploring