Yongzheng Emperor in the context of "Outer Mongolia"

The High Qing era (Chinese: 康雍乾盛世; pinyin: Kāng Yōng Qián Shèngshì), or simply the High Qing, refers to the golden age of the Qing dynasty between 1683 and 1799. China was ruled by the Kangxi, Yongzheng, and Qianlong Emperors in this period, during which the prosperity and power of the empire grew to new heights.

Coming after the collapse of the Ming dynasty, the High Qing era saw China transform into a commercial state with nearly twice the population of its predecessor due to high political stability. Improvements in literacy also took place during this period, and the territory of China was greatly expanded north and west compared to the previous Ming dynasty. During the High Qing, the trend of imitating Chinese artistic traditions, known as chinoiserie, gained great popularity in Europe, due to the rise in trade with China and the broader current of Orientalism.

The Kangxi Emperor (4 May 1654 – 20 December 1722), also known by his temple name Emperor Shengzu of Qing, personal name Xuanye, was the third emperor of the Qing dynasty, and the second Qing emperor to rule over China proper. His reign of 61 years makes him the longest-reigning emperor in Chinese history and one of the longest-reigning rulers in history. He is considered one of China's greatest emperors.

The third son of the Shunzhi Emperor, Kangxi was enthroned at the age of seven while actual power was held for six more years by the four regents nominated by his father. After assuming personal rule, Kangxi's attempt to revoke the fiefdoms of feudal princes sparked the Revolt of the Three Feudatories, which he suppressed. He also forced the Kingdom of Tungning in Taiwan and Mongols in the north and northwest to submit to Qing rule, and launched an expedition that incorporated Tibet into the empire. Domestically, he initially welcomed the Jesuits and the propagation of Catholicism in China, but tolerance came to an end as a result of the Chinese Rites controversy. Later in his reign, Kangxi became embroiled in a prolonged succession dispute. He died in 1722 at the age of 68 and was succeeded by his fourth son, who assumed the throne as the Yongzheng Emperor.

The Qianlong Emperor (25 September 1711 – 7 February 1799), also known by his temple name Emperor Gaozong of Qing, personal name Hongli, was the fifth emperor of the Qing dynasty and the fourth Qing emperor to rule over China proper. He reigned officially from 1735 until his abdication and retired in 1796, but retained ultimate power subsequently until his death in 1799, making him one of the longest-reigning monarchs in history as well as one of the longest-lived.

The fourth and favourite son of the Yongzheng Emperor, Qianlong ascended the throne in 1735. A highly ambitious military leader, he led a series of campaigns into Inner Asia, Burma, Nepal and Vietnam and suppressed rebellions in Jinchuan and Taiwan. The most significant of his campaigns were directed against the Dzungars, bringing Xinjiang under Qing rule. During his lifetime, he was given the deified title Emperor Manjushri by the Qing's Tibetan subjects. Domestically, Qianlong was a major patron of the arts as well as a prolific writer. He sponsored the compilation of the Siku Quanshu (Complete Library of the Four Treasuries), the largest collection ever made of Chinese history, while also overseeing extensive literary inquisitions that led to the suppression of some 3,100 works.

The Deliberative Council of Princes and Ministers (traditional Chinese: 議政王大臣會議; simplified Chinese: 议政王大臣会议; pinyin: Yìzhèng Wáng Dàchén Huìyì), also known as the Council of Princes and High Officials and Assembly of Princes and High Officials, or simply as the Deliberative Council (traditional Chinese: 議政處; simplified Chinese: 议政处; pinyin: Yìzhèng Chù; Manchu: ᡥᡝᠪᡝ ᡳ
ᠪᠠ, Möllendorff: hebe-i ba), was an advisory body for the emperors of the early Qing dynasty (1644–1912). Derived from informal deliberative groups created by Nurhaci (1559–1626) in the 1610s and early 1620s, the Council was formally established by his son and successor Hong Taiji (1592–1643) in 1626 and expanded in 1637. Staffed mainly by Manchu dignitaries, this aristocratic institution served as the chief source of advice on military matters for Hong Taiji and the Shunzhi (r. 1643–1661) and Kangxi (r. 1661–1722) emperors. It was particularly powerful during the regencies of Dorgon (1643–1650) and Oboi (1661–1669), who used it to enhance their personal influence.

After serving as the most influential policymaking body of the dynasty for more than a century, the Deliberative Council was displaced and then made obsolete by the more ethnically mixed Grand Council, which the Yongzheng Emperor (r. 1722–1735) created in the late 1720s to circumvent the influence of the deliberative princes and ministers. The Deliberative Council was formally abolished in 1792.

The Complete Classics Collection of Ancient China (or the Gujin Tushu Jicheng) is a vast encyclopedic work written in China during the reigns of the Qing dynasty emperors Kangxi and Yongzheng. It was begun in 1700 and completed in 1725. The work was headed and compiled mainly by scholar Chen Menglei (陳夢雷). Later on the Chinese painter Jiang Tingxi helped work on it as well.

The encyclopaedia contained 10,000 volumes. Sixty-four imprints were made of the first edition, known as the Wu-ying Hall edition. The encyclopaedia consisted of 6 series, 32 divisions, and 6,117 sections. It contained 800,000 pages and over 100 million Chinese characters, making it the largest leishu ever printed. Topics covered included natural phenomena, geography, history, literature and government. The work was printed in 1726 using copper movable type printing. It spanned around 10 thousand rolls (卷). To illustrate the huge size of the Complete Classics Collection of Ancient China, it is estimated to have contained 3 to 4 times the amount of material in the Encyclopædia Britannica Eleventh Edition.

In Chinese alchemy, elixir poisoning refers to the toxic effects from elixirs of immortality that contained metals and minerals such as mercury and arsenic. The official Twenty-Four Histories record numerous Chinese emperors, nobles, and officials who died from taking elixirs to prolong their lifespans. The first emperor to die from elixir poisoning was likely Qin Shi Huang (d. 210 BCE) and the last was the Yongzheng Emperor (d. 1735 CE). Despite common knowledge that immortality potions could be deadly, fangshi and Daoist alchemists continued the elixir-making practice for two millennia.

Amdo (Tibetan: ཨ་མདོ་, Wylie: a mdo [ʔam˥˥.to˥˥]; Chinese: 安多; pinyin: Ānduō), also known as Domey (Tibetan: མདོ་སྨད་), is one of the three traditional Tibetan regions. It encompasses a large area from the Machu (Yellow River) to the Drichu (Yangtze). Amdo is mostly coterminous with China's present-day Qinghai province, but also includes small portions of Sichuan and Gansu provinces.

In the 7th century, Amdo became a part of the Tibetan Empire until its dissolution in the 9th century. A local Tibetan theocracy called Tsongkha ruled the region from 997 to 1104. In the 13th century, Mongol forces conquered the area, which led to the beginning of a priest and patron relationship. From the 14th to the 16th century, the Ming Dynasty controlled some border areas of Amdo while Mongol presence remained significant. In the 1720s, the Yongzheng Emperor of Qing dynasty seized Amdo from the Dzungars and began forming the modern boundaries of Qinghai. He allowed most of the area to be administered by a series of local Tibetan rulers associated with the Ü-Tsang government through monastery systems but not directly governed by the Dalai Lama's Ganden Phodrang. From 1917 parts of Amdo were occupied by warlords of the Ma clique, who joined the Kuomintang (Chinese Nationalist Party) in 1928. By 1952, Chinese Communist Party forces had annexed central Tibet and defeated both Kuomintang and Tibetan forces, solidifying their hold on the area roughly by 1958.