For 90 years, the mainland's Communist Party and Taiwan's Nationalists, or Kuomintang, have shared one thing in common - their homage to Sun Yat-sen, who founded the first Chinese republic.
The ruling parties on both sides of the Taiwan Strait declare their loyalty to the revolutionary cause that overthrew the Qing dynasty, ending several hundred years of Manchu rule in China and more than two thousand years of imperial rule.
Each year, Beijing and Taipei host ceremonies to mark the anniversary of the 1911 revolution. But the different ways the event is celebrated on the mainland and in Taiwan reflect the separate paths taken by the two sides over the past half century.
The revolution that began on October 10, 1911 culminated in the establishment of the Republic of China, with Sun as its first president.
In Taiwan, formally known as the Republic of China, Sun is revered as the country's founding father. October 10 - commonly referred to as the Double Tenth Festival because it is on the 10th day of the 10th month - has been the Republic of China's National Day ever since the revolution.
On the mainland, Sun is referred to as the 'great pioneering revolutionary' - with the revolution led by the Communist Party, which proclaimed the People's Republic of China in 1949 after winning the civil war against the Kuomintang, the political party founded by Sun.