Plainly speaking, the Boxer Rebellion therefore required the Western powers (multinational army which included Japan) to intervene in China and quell the Boxers. They then required the Qing to compensate for their involvement and therefore this led to a "huge financial burden and political disgrace" to the Qing Dynasty.

However, i feel that the significance of the Boxer Rebellion lies not so much in the rebellion itself, but the context in which the rebellion was situated in. One important thing to note first is that the Boxer Rebellion is not a one-off event in the history of modern China. While it took place in 1899, this rebellion was just one of the many events which undermined the Qing and traditional ideas of Chinese-ness within China. One can look towards the Treaty of Nanking in 1842 (and by extension First and Second Opium Wars), or the Sino-Japanese War in 1895, or the 100 Days Reform (By Kang Youwei in 1898) as key events that preceded the Boxer Rebellion, and look at the May Fourth Movement (and everything that followed) as events that succeeded it, to understand the broad context of what China was undergoing.

As such, the Boxer Rebellion, if anything, was a chapter in part of China's tension between the Qing and the modernizing forces that were forcing her 2000-year old dynasty out in place of new political and cultural ideologies.

Sources:

Mitter, Rana. Modern China: A Very Short Introduction. Oxford: Oxford University Press, 2008.

Dillon, Michael. Contemporary China: An Introduction. New York: Routledge, 2009.