The Qing Dynasty was the last feudal dynasty in Chinese history. The change of emperors experienced many twists and turns. The first emperor of the Qing Dynasty was Qing Taizu Nurhachi. He founded the Qing Dynasty in 1559, and since then, he had successively married his sisters and relatives as concubines. He finally died in 1644. The second emperor of the Qing Dynasty was Emperor Taizong, Huang Taiji. After he ascended the throne in 1626, he used a series of political and military means to defeat the resistance of the Ming Dynasty and unify the country. During the reign of Huang Taiji, he implemented a series of reform measures, including the reform of the system, the expansion of territory, and the strengthening of central power, which laid the foundation for the long-term stability of the Qing Dynasty. The third emperor of the Qing Dynasty was Emperor Shunzhi. He succeeded to the throne in 1644 and was one of the founding emperors of the Qing Dynasty. During the reign of Shunzhi, he adopted a series of reform measures, including weakening the power of eunuchs, strengthening the central power, and implementing the reform of the land system, which laid the foundation for the stability and development of the Qing Dynasty. The fourth emperor of the Qing Dynasty was Emperor Kangxi. He succeeded to the throne in 1654 and was the eldest son of the third emperor of the Qing Dynasty, Emperor Shunzhi. During the reign of Kangxi, a series of political and military reforms were carried out to strengthen the central power and consolidate the ruling position of the Qing Dynasty. He also toured Jiangnan five times and promoted the relationship between the Qing Dynasty and the Jiangnan area. The fifth emperor of the Qing Dynasty was Emperor Yongzheng. He ascended the throne in 1722 and was the fourth son of Emperor Kangxi. During his reign, Yongzheng implemented a series of reform measures, including strengthening the central power, reorganizing the army, and implementing the system of sharing the land with the people, which laid the foundation for the long-term stability of the Qing Dynasty. The sixth emperor of the Qing Dynasty was Emperor Qianlong. He ascended the throne in 1711 and was the grandson of Emperor Yongzheng. During the reign of Emperor Qianlong, he carried out a series of cultural and artistic reforms, implemented the "Qianlong Tongbao" system, strengthened the central power, and promoted the economic and cultural prosperity of the Qing Dynasty. He had also visited Jiangnan many times to strengthen the relationship between the Qing Dynasty and the Jiangnan area.