The best running routes in Tsing Yi and Tsuen Wan

I've run every distance from 800 metres to the half marathon, and I hold many Hong Kong records, including the junior half marathon record of one hour, 26 minutes and 22 seconds.

Over the years, many people have tried to persuade me to qualify for the marathon at the Olympics, but I've always been a bit scared by the distance.

In 2012, I ran my first "fun run" marathon, and I realised I could do it. Now I've made the distance my focus, and my target is the 2016 Olympics. The qualification time is two hours 43 minutes; my marathon personal best is two hours, 58 minutes and 56 seconds.

But that was my first, and I had recently undergone an appendectomy, and was not fully prepared.