Yushu children's "smiling" video was shown at a special seminar in Beijing on June 6. Event aimed to share the experience of the public welfare activities of "Sanjiangyuan, Beijing Love, Chinese Heart - Qinghai Yushu Tibetan Youth Beijing Tour" Children visited the Forbidden City, the Great Wall, watched the flag-raising ceremony of Tiananmen Square; watched the National Stadium's "Bird's Nest" and "Water Center" During the five-day trip, the children visited the five national parks.