I have a grandpa, he is nearly 70 years old, it sounds old for him, but in his heart, he is really young. Two years ago, when I was in summer holiday, I went back to hometown and visited him. When I used my cellphone, my grandpa could say out which brand it belonged to, he also told me the advantage and disadvantage of my cellphone. I was so surprised, my grandpa said since I went to school, he had nothing to do, so he became interested in the digital products. He is familiar with all kinds of digital products, he is so cool to me. My grandpa is so lovely, he is so fashionable, he is never old.