He takes his briefcase full of books and notebooks, and goes to college.
The semi-retired Mr Yu owns an IT services company and has been a boss for 20 years. But now he wants to fulfil a dream he couldn't afford when he was younger.
"I didn't go to college when I was young because my family didn't have the money. So I started working and eventually started a business. But I found there were many things about business management that I still wanted to learn," said Mr Yu.
He is among a new wave of older people going to college for either short-term classes or degrees as Taiwan's life expectancy increases and the population ages.
In 2008, Taiwan's government began offering subsidised university courses for older people, as a way to help them live more active lives.