Ng's 2017 debut novelUnder the Pendulum Sun concerns a fantastical journey in gothic mid-19th centuryEngland, and was shortlisted for Starburst's 2017 Brave New Words award and the 2018 Robert Holdstock award for Best Fantasy Novel at the British Fantasy Awards. It was named by SYFY as one of the "10 Best Sci-Fi and Fantasy Books of 2017" and included in Adam Roberts' list of "The best science fiction and fantasy of 2017" in The Guardian and Jeff Somers' list of "50 of the Greatest Science Fiction & Fantasy Debut Novels Ever Written". Her story "How the Tree of Wishes Gained its Carapace of Plastic" is included in the anthology Not So Stories, published April 2018 by Abaddon Books, and was described by Starburst as "a tour de force of the author's talents". Other short stories have been published in Mythic Delirium and Shoreline of Infinity magazines. Ng won the Sydney J Bounds Award for Best Newcomer at the 2018 British Fantasy Awards for Under the Pendulum Sun, and was a 2018 finalist for the John W. Campbell Award for Best New Writer, announced as part of the Hugo Awards. In 2019, Ng won the John W. Campbell Award for Best New Writer. As part of her acceptance speech, she referred to the award's namesake John W. Campbell as "a fucking fascist", sparking debate in the science fiction and fantasy community. On 27 August, the editor of award sponsors Analog Science Fiction and Fact announced that the award would be renamed the Astounding Award for Best New Writer.Ng accepted her prize in July 2020.On 31 July, Ng sent her 2020 Hugo for Best Related Work Acceptance Speech to YouTube. In this video acceptance speech, she said that “pulling down memorials to dead racists is not the erasing of history, it is how we make history”. She also said that “Last time I gave a speech at WorldCon, it was literally hours after a huge march in Hong Kong, my most cyberpunk of cities. Since then, things have gotten worse.” “The tactics used to marginalize us, the tear gas used against us, it is the same everywhere. And we defeat it in the same way. And so our coming together is more important than ever before. To write a future of joy and hope and change.” “Now is the time. Now is always the time. Free Hong Kong, Revolution of Our Time.”