As an actor, he came to prominence with his leading roles in television series Damo (2003), Phoenix (2004), Lovers (2006), Yi San (2007) and Marriage Contract (2016).

[5] Lee played a vampire in the cable series Freeze (2006), a gangster in Lovers (2006),[4] and a criminal profiler in Soul (2009).

[9][10] Lee comes from a family with strong ties in the financial sector, and believed to be involved in the banking, transportation and tourism industries, among others.

In 2011, Lee joined the company Ask Veritas Assets Management, which specializes in intellectual property and real estate investment.

[14][15] Together with the Nippon Foundation and South Korean food franchise Genesis, Lee established the "Let's Tree Fund" in 2010 to conduct reforestation activities.