I love raising awareness and encouraging people to take action for World Environment Day, because it demonstrates how individual voices can become a global chorus for change.

As the Ambassador for WWF Earth Hour, I still vividly remember that there were only 80 buildings in China that participated the Earth Hour in its first year. Six years later, there were 170 cities and thousands of buildings that participated. We are still growing strong. I am encouraged by the accomplishments we have made together and they make me proud and more determined than ever.

Air pollution is my biggest concern right now. Maybe because I live in Beijing, and in this city we have such severe challenges due to bad air quality. It has affected our daily lives and health. I do not go outdoors because of it. I desperately hope that we can improve the current situation.

We do have responsibilities, as we live on this planet. It is our one and only home, which we are obligated to protect, to keep as beautiful and harmonious as it is. It is really for everyone to do so, including you and me.

I used to think hard work made me come alive, honestly. I used to have a daily work schedule with millions of things on it and I thought, "This is wonderful!"

I always have my own attitude towards everything in life.

Perseverance is my biggest lesson. When I started to get involved in environmental protection some years ago, my people did not take it seriously and they never considered it important. But today, people look at what I do and they truly recognize those efforts, and eventually they join you as "environmental activists" too!