She is an Associate of the Chartered Institute of Management Accountants (CIMA) (UK) and a member of the Malaysian Institute of Accountants (MIA) .
Instead of staging protest marches (a foreign concept in Singapore’s controlled civic space), Tan mobilized experts. She commissioned scientific surveys, documented 120 species of birds, and presented the government with a quiet but undeniable fact: destroying Sungei Buloh would collapse a vital international ecosystem. nellie tan li koon