Howey Ou

[1] Ou's activism started after convincing her parents, both university lecturers, to adopt several lifestyle choices to reduce their own carbon footprint.

[10][11][12] In 2019, youth activist group Earth Uprising nominated her to attend the 2019 UN Climate Action Summit in New York.

[11] After she and three other activists were detained after a silent protest in front of the Shanghai Exhibition Centre in September 2020[16] she was called "incredibly brave" by Greta Thunberg.

[2] In Lausanne, Switzerland, Ou started a hunger strike on Palud Square on 19 April 2021, to protest her 60-day prison and 1,200-Swiss francs fine sentence for protesting against expansion of the exploitation of the limestone quarry on Mormont hill by the Swiss-French cement company LafargeHolcim.

[18][19] In 2024, she was fully acquitted by the Supreme Court of Switzerland, which ruled that she had not obstructed police action.