Ho Chi Minh City signed a memorandum of understanding with Australia’s state of New South Wales (NSW) on April 17th , 2019, opening the door to open cooperation between Ho Chi Minh City and Sydney as well as the whole of NSW. Please see the full text of the NSW press release.
https://www.industry.nsw.gov.au/media/releases/2019/ho-chi-minh-chooses-nsw-for-trade-and-investment