What were the boxer uprising/rebellion, explain in one simple sentence

The Boxer Uprising was a violent movement in China during 1899-1901, where a secret society called the Boxers rebelled against foreign influences and aimed to rid the country of imperialist powers.

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Apologies for any confusion earlier. To provide a more accurate and concise explanation:

The Boxer Uprising was a rebellion in China from 1899-1901 where a group known as the Boxers opposed foreign influences and sought to remove imperialist powers from the country through armed resistance.

The Boxer Uprising/Rebellion was an anti-imperialist and anti-Christian movement in China from 1899 to 1901, which aimed to expel foreign influence from the country.