Teenagers from more than 20 countries including Australia, Germany and Russia, participated in the 13th Shanghai International Youth Interactive Friendship Camp at the Shanghai Teenagers Activity Center on Tuesday. The event commenced on July 18 and will continue till July 27. During this 10-day event, the participants can take part in a series of activities such as cultural sessions and sightseeing aimed at perceiving the Chinese culture and strengthening friendships. Photos: Yang Hui/GT