An activity I haven't logged on italki for several days. Yesterday I took part in an meaningful activity which let me think a lot. It's a young people's cultural and thoughts exchange. There were two project which impressed me most. One is the Mamatown study helping project which often organizes fund-raising and community outreach, They hold charity bazaars to help the children in poverty. And they conduct community parties to encourage the people who are unconfident to show themselves. The other one is "On the way to school", which is committed to improve the unattended children's mental health. They invited some famous presenters, educators, psychologists to record educative stories from best selling teenage books. They also appeal the general public to record some good stories or encouraging words. Then the volunteers provide these recordings to the unattended children. Both of the two project help children in an equal way: they asked the children to bring their little gifts to exchange, like a painting, a letter, a flower and so on. I was moved by the projects' stories and the warm hearts of sponsors and volunteers. I esteem them deeply. Public good is not far away from us. Like Uncle Licha, the founder of Mamatown said, "I am not a knowledgeable specialist, I don't know too much about how the society running, but I can do some things which are obviously good things." Yes, although we are ordinary, we are able to warm people who need help.