Australia's oldest dad has revealed he wants more kids, after welcoming a baby boy a year-and-a-half ago.

Dr John Levin, 93, and his wife, Dr Yanying Lu 37, welcomed their first child together, a baby boy 18 months ago.

The pair told Nova 100's Jase & Lauren how their love story started and revealed they want more kids.

"My wife died, I was married for 57 years, I got very lonely," Levin said.

In an effort to change that, he set out to do something and decided that learning something new might help. 

"I thought maybe I'll learn a language, for some reason I don't know why, I picked Chinese.

"I looked up all the schools I could go to, there were three in Melbourne... I picked on a Monday afternoon.

"This young lady came out and said I'm Yanying, I'm your teacher...

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