On 12 June 2013, Hii joined the cast of Neighbours as Hudson Walsh. Hudson was introduced as a love interest for established character Chris Pappas (James Mason). On 20 June, Hii told Daniel Kilkelly from Digital Spy that he had been asked back to continue filming the following month. After leaving Neighbours, Hii was cast as Prince Jingim in the Netflix drama Marco Polo. He will be portraying Alistair Cheng in the movie Crazy Rich Asians based of the novel of the same name by Kevin Kwan.