The pair managed to put out the fire in their Sau Mau Ping home, but were injured in the process.
Police are appealing for information on Lau Lap-sun's whereabouts.
Munch on your mooncakes this evening, and ponder these fascinating facts.
The scientist, who had battled Alzheimer’s disease for years, did research on fibre optics which helped the development of modern communications.
OK, we don't have proof the talkshow host loves the word 'ew', but he does have a segment named after it. Oh, and 'OK' has also been added.
Many of the traditional venues, including parks and beaches, are still closed due to the destruction of last week's powerful storm.
The separatist Hong Kong National Party has been prohibited from further operations.
This Mid-Autumn Festival, learn all about the ancient Chinese tradition of writing riddles on lanterns - and solve some yourself
One of the reasons this custom began may surprise you.
Were you able to crack all the lantern riddles?
YouTube star Matt Steffanina on the power of dance, and how social media led to gigs with celebrities like Kevin Hart and Jason DeRulo
The dancer was in Hong Kong for the YouTube FanFest last month.