Describe a person who contributes to society(文字版)

The person I want to talk about is Leijun, the CEO of Xiaomi brand. You know, people like to buy the smart phone and other things from Xiaomi, it is like the Chinese iPhone in my mind. He looks rather tall, very slim, usually put a smile on face. He could speak some English but not very good, I like his accent when he speaks English you know. I got to know this person some years ago, he was very successful in my country. Everyone knows him you know. Now, he is in charge of a big company, at the same time, he gives some lessons in university, I love listening to his class. You know, he changed our life. In my country, not a lot of people could buy the iPhone or Apple computer, because they are too expensive. But Leijun changed this part, his company had lots of brilliant design on smart phone and computer. More importantly, we all like it and all of us could buy it. This is very important. I think that he has made enough contribution to our society, and he keeps doing this, too. That is it.