Wong told reporters at a news conference on Monday that she is summoning China's Ambassador to Australia to express her country's objection to the ruling.

"Australia will not relent in our advocacy for justice for Dr. Yang's interests and wellbeing, including appropriate medical treatment and we will continue to provide consular assistance to him and his family," Wong added.

A Beijing court heard Yang's trial in secret in May 2021 and the case against him has never been publicly disclosed. He has denied working as a spy for Australia or the United States.

Sydney-based scholar Feng Chongyi said the suspended death sentence would convert to life imprisonment after two years.