Song to Qing:
Song (960-1279): Although it unified China proper from 960-1127 (Northern Song), it was bordered by the Liao to the north, which caused considerable issues, and was the smallest imperial dynasty in size, with no claims in Central Asia. However, it flourished culturally in numerous areas such as paintings, poetry, and calligraphy, along with economic and technological developments, the most of any Chinese dynasty, causing an increase in trade within and with other countries, and a population boom, possibly reaching over 100 million. It also became the first country to produce paper money, gunpowder, and the movable type system in 1040, while inventing the navigation compass in 1088, along with becoming the first Chinese dynasty to establish a permanent navy. On the other hand, the military had little influence over the government, which possibly contributed to a weaker army and inability to expand its lands beyond its control after unification. After it was pushed south by the Jin, losing Kaifeng, its capital, establishing another in Li'nan (Hangzhou), the general Yue Fei, considered as a hero in China, scored numerous victories, maintaining its independence. It then continued to hold out against northern dynasties until it finally came to an end after losing the Battle of Yamen, paving the way for the Yuan.
Jin (1115-1234): Not to be confused with other dynasties of the same name. It was founded by Wanyan Aguda, who changed his surname from Jin. After forging an alliance with the Song to conquer the Liao, it then turned on its former ally, capturing Kaifeng and taking over Chinese territory north of the Huai river. Unlike the Liao, however, the dynasty became sinicized as thousands of nobles emigrated south to govern the natives, and some married them. Laws were also based on previous Chinese ones, allowing greater integration between the rulers and the natives. Although minor rebellions erupted within the country, and the state along with those surrounding it made numerous campaigns, the dynasty mostly held firm until the Mongols invaded in the early 13th century. The country was the only one adjacent to the Mongols to withstand Genghis Khan's invasions, although it eventually fell seven years after his death after the Song invaded from the south in concert with the northern nomads. Its fall would eventually open the path for the first non-Chinese unification of China proper.
Yuan (1271/9-1368): The first non-Chinese (excluding sinicized rulers) ruled dynasty to unify China. It also led to Chinese unification for the most part until 1911 as the two succeeding dynasties managed to consolidate rule for long periods. Although the Mongol Empire was created by Genghis Khan, it fractured into several smaller ones, of which the Yuan, located in the east, was established by Kublai Khan (Shizu), one of his grandsons. After establishing the dynasty and getting rid of contenders to the throne, he invaded the Song, defeating them in a naval battle and unifying not only China, but eventually most of East Asia. Because he had lived in China and was tutored by Chinese officials, he was able to consolidate control by utilizing both Chinese and Mongolian methods, allowing both ethnicities to serve in the government, although classes were separated by ethnicity in a loose caste system. The unification also allowed culture to flourish, along with widespread trade along the Silk Road, as its Asian routes lay entirely within the Mongol Empire. Numerous travelers and traders, such as Marco Polo and Ibn Battuta, traveled to the Yuan, while Kublai sent an ambassador to Europe to meet with the major rulers. After his death, however, succession issues weakened the state, causing it to lose legitimacy in China and expulsion north of the Great Wall after the Chinese launched numerous revolts. The Northern Yuan, however, lasted until 1635, when it submitted to the Qing.
Ming (1368-1644): The last Chinese-ruled dynasty. Zhu Yuanzhang, only the second commoner to become emperor, fought off contenders to the throne, eventually becoming the Hongwu Emperor. Because he resented the previous Yuan rule, he moved the capital to Nanjing in hopes of reviving Chinese ideals separate from nomadic ones. Soon after his death, however, one of his sons, the Yongle Emperor, shifted the capital back to Beijing, and implemented policies contradicting that of the founder. It was also the last to conquer Vietnam under his rule, holding it briefly for 20 years until the natives revolted and drove out the Chinese when they attempted to rule it as a province. The emperor also sent a fleet overseas, led by Zheng He, a Muslim eunuch, in order to learn more about cultures outside of Chinese influence, but his successor banned them because of ethnocentricity. However, even though they conquered parts of Central Asia, while bringing present-day Yunnan firmly under Chinese control for the first time, none of the emperors were able to dominate the Mongols, who kidnapped the second emperor. As a result, they rebuilt the Great Wall to prevent future invasions. Soon afterward, the dynasty prospered both economically and culturally, trading with European powers, who brought their wealth from colonizing the New World, while flourishing in the arts, causing a population increase to possibly 200 million. However, the Imjin War put a strain on Chinese resources, causing a steady decline after trade began to decrease with foreigners, while the Little Ice Age wrecked havoc on food supplies. During this time, the Jurchen, led by Nurhaci, rose in the northeast, unifying the region by taking advantage of the Ming's weakness. His successor continued his father's policies by changing the title of the state from Later Jin to Qing, while renaming the people as Manchu. After separating Joseon from the Ming, he invaded China by breaking through the Great Wall, conquering the country in 1644. However, the remnants of the Ming, led by Zheng Chenggong (Koxinga), who founded the Kingdom of Tungning (1661-83) in Formosa (Taiwan), Wu Sangui, who had betrayed his country, and others, would continue to resist until 1662. The rebels failed to push the invaders out because they were divided over who to support, causing the Qing to defeat them easily.
Qing (1644-1912): The last dynasty to retain Chinese culture. Although it was officially founded by Nurhaci, he was posthumously named Tianming by Huang Taiji, his eighth son, who conquered China. The original Jurchen state was created after initial campaigns unifying the Jianzhou Jurchens, leading Nurhaci to break ties with the Ming in order to conquer all of the tribes. He also sought alliances with the Mongolians, intermarrying nobles in order to seal alliances, while attacking those who resisted. Although he stabilized the state by instituting the Eight Banners system and inventing the Manchu alphabet, he died soon after his first major defeat, leaving his son to carry his legacy. Two of their descendents, the Kangxi and Qianlong Emperors, ruled for 61 and 60 years respectively, ushering in another golden age of flourishing Chinese culture. Military campaigns also greatly expanded the empire's territory, conquering Mongolia, Central Asia (Xinjiang), and Northeast Asia. With the exception of Outer Mongolia and Manchuria, along with Tuva, the dynasty set the boundaries for modern China, and marked the first Chinese immigration to Manchuria in the 19th century as the dynasty initially blocked it, then changed its mind after Russia began to encroach on the area. On the other hand, the Manchus began to lose their fluency in the language, becoming the only ethnic group which does not speak a non-Mandarin language, although the Xibo speak a related one. However, the prosperity did not last long, as the Russians demanded Outer Manchuria, and the British began smuggling opium in order to attempt to trade with China. Although Lin Zexu, an official, destroyed numerous opium boxes to signify opposition, this action launched the Opium Wars (1839-42, 56-60), which marked the beginning of China's division into spheres of influences, along with Hong Kong becoming a British colony until 1998. After the country's defeat in the First Sino-Japanese War (1894-5), the natives became fed up, overthrowing the dynasty in the Xinhai Revolution. China would not be unified quickly, though, as it went through the Warlord Era/Civil War (1916-28, 27-49), and still remains divided between the PRC and ROC.