How can I book a ticket for JAL or ANA from Nanjing or Shanghai to Melbourne?

Qantas Qantas Air China International Airlines have flights to Melbourne, JAL and ANA, but if you want to save money, you can recommend a route. First fly to meilan airport, Haikou, Hainan, take Hainan Airlines or Air China, or Shanghai Airlines, and then take Jetstar Australia. It seems that there are flights to Sydney and Melbourne. It's a low-cost airline. It's cheap.