20 years ago, my parents were young and energetic. Their minds were full of work and responsibilities, only with very less room for their children. They worked very hard, left home early and got back late, because everybody was excited to build our great country stronger. Of course i was not born by then and heard of these from my parents' narration. Mum and dad are now around 40 years old, their mind didn't change much. They don't understand why we young people pay more attention on personal entertainment and fall in love even when we're still in high school. But they appreciate the rapid advancing of new technologies and science. Same as before, they're eager to learn new skills and learn about new things. I can see they're changing their living style gradually. I hope after another 20 years, my parents would enjoy more than contributing more.