"[21] She was one of the activists to take part in the Fridays For Future 'Pass the Mic' campaign, also in late 2020, to request that David Attenborough pass on his Instagram account to youth advocates, particularly from the Global South, in order to make effective use of his platform for climate activism.

[23] Tan's organisation went into action following the 2020 back-to-back hurricanes in the Philippines to help the most impacted communities, including by feeding the hungry and talking to them about the problems they faced.

[27] Tan has also spoken up about "red-tagging," a practice of government officials and supporters in the Philippines where activists and opposition are branded as communists or terrorists, and how it has negative effects on the participation of the youth in the climate movement in her country.

[31] Tan along with four other activists from MAPA (Most Affected People and Areas) countries, Eyal Weintraub (Argentina) Disha A Ravi (India), Kevin Mtai (Kenya), and Laura Verónica Muñoz (Colombia) along with Greta Thunberg (Sweden) announced a new wave of climate strikes the 2020s.

[32] While announcing climate strikes Tan has called for "annual binding carbon targets and immediate cuts in emissions in all sectors of our economy.