CLEEN Project is a non-profit project established in 2018 by high school students in Hanoi with the aim of protecting the environment. After 6 seasons of active operation, the project has successfully left remarkable marks in the journey of raising people's awareness of the mission of protecting the environment through volunteering, collecting and exhibitions.
Entering the 7th season, the previous Pre-Event received a lot of attention and response from the community and successfully collected approximately 350kg of materials including about 100kg of paper and 200kg of glass. Following the Main Event this time, the Organizing Committee recycled the above materials and brought a completely new activity to the environmental protection workshop "Khoi Huyen".

The name “Khoi Huyen” evokes the image of an artist gently touching the strings, creating the first sounds, a metaphor for the beginning of a “green” journey with the mission of protecting nature. Coming to the event, the CLEEN Project Organizing Committee has prepared 4 interesting areas including “Do Re Mi”, “Tu Khuc”, “Diep Khuc” and “Lang Lang”. At each stop, participants will experience a variety of attractive activities such as making keychains from velvet zinc, decorating tote bags, making mosaic paintings from recycled glass, taking souvenir photos and buying environmentally friendly products.
The event attracted the attention of a large community with a diverse audience, no age limit, so the "Khoi Huyen" workshop welcomed many young guests and middle-aged and elderly people.
Head of the Organizing Committee - Nguyen Huy Minh Bao shared: "I hope the workshop will raise people's awareness of the current state of the environment around us by recycling common materials into beautiful decorative items. For example, the mosaic paintings at the workshop are made from the glass bottles we collected from the Pre-event.
At the end of the Main Event, I plan to disburse the organization costs and the remaining proceeds will be used for charity purposes such as planting trees in Hanoi. Accompanying the Organizing Committee throughout the project season, I am very grateful to receive attention from the community, I hope that in the future everyone will continue to support us on this meaningful journey."
Through the event, the organizers hope to raise people's awareness of green living and the importance of protecting the ecosystem around us. The workshop event "Khoi Huyen" with the mission of starting to create a magical green environment has not only demonstrated the creativity of high school students but also affirmed their role in protecting the environment and spreading practical values for the community.