A report on Chongqing, Second Sino-Japanese War and Chiang Kai-shek

General Chiang Kai-shek, who became the Chairman of the Kuomintang after Sun's death and subsequent power struggle in 1925, began the Northern Expedition in 1926 to overthrow the Beiyang government.

Nation-building efforts yielded to fight the Second Sino-Japanese War in 1937 when a skirmish between the National Revolutionary Army and Imperial Japanese Army culminated in a full-scale invasion by Japan.

Three years later, in 1949, nearing the end of the civil war, the CCP established the People's Republic of China in Beijing, with the KMT-led ROC moving its capital several times from Nanjing to Guangzhou, followed by Chongqing, then Chengdu and lastly, Taipei.

The split was partially motivated by the purge of the Communists within the party, which marked the end of the First United Front, and Chiang Kai-shek briefly stepped down as the commander of the National Revolutionary Army.

In 1936, when natural disaster struck Central China with widespread flooding affecting Hebei, Hunan, Jiangxi, Wuhan and Chongqing caused by the Yangtze and Huai Rivers bursting their banks, Ong Seok Kim, as Chairman of the Sitiawan Fundraising and Disaster Relief Committee, raised money and materials in support of the victims.

During the Second Sino-Japanese War and following the fall of Nanking in December 1937, Wuhan had become the provisional capital of China's Kuomintang government, and became another focal point of pitched air battles beginning in early 1938 between modern monoplane bomber and fighter aircraft of the Imperial Japanese forces and the Chinese Air Force, which included support from the Soviet Volunteer Group in both planes and personnel, as U.S. support in war materials waned.As the battle raged on through 1938, Wuhan and the surrounding region had become the site of the Battle of Wuhan.

The exact causes of World War II are debated, but contributing factors included the Second Italo-Ethiopian War, the Spanish Civil War, the Second Sino-Japanese War, the Soviet–Japanese border conflicts, the rise of fascism in Europe and rising European tensions since World War I.

Generalissimo Chiang Kai-shek deployed his best army to defend Shanghai, but after three months of fighting, Shanghai fell.

Japanese military victories did not bring about the collapse of Chinese resistance that Japan had hoped to achieve; instead, the Chinese government relocated inland to Chongqing and continued the war.

Nanjing is also considered a Beta (global second-tier) city classification, together with Chongqing, Hangzhou and Tianjin by the Globalization and World Cities Research Network, and ranked as one of the world's top 100 cities in the Global Financial Centres Index.

Nanjing served as the capital of Eastern Wu (229–280), one of the three major states in the Three Kingdoms period; the Eastern Jin and each of the Southern dynasties (Liu Song, Southern Qi, Liang and Chen), which successively ruled southern China from 317 to 589; the Southern Tang (937–75), one of the Ten Kingdoms; the Ming dynasty when, for the first time, all of China was ruled from the city (1368–1421); and the Republic of China under the nationalist Kuomintang (1927–37, 1946–49) prior to its flight to Taiwan by Chiang Kai-Shek during the Chinese Civil War.

The city also served as the seat of the rebel Taiping Heavenly Kingdom (1853–64) and the Japanese puppet regime of Wang Jingwei (1940–45) during the Second Sino-Japanese War.