After nearly 30 years acting, Lee Jung-jae is used to being approached by devotees of his work. But recently he was in a restaurant in his native South Korea when a man a few years his senior went up to him as he was about to leave. "Usually my fans are much younger than me," Lee says in an interview with the South China Morning Post this week. "He told me he was in his mid-50s, and he said, 'I'm becoming more hopeful. I'm getting older but you can always have success later in your life. You're giving me a…