The cleaner air day

Dear all,
Monday jan 18th, 2021 is a special Day, “Cleaner Air Day” .
On this occasion, please participate in Clean Air Day contest,
You may send us an original short video clip, max 2 min,Holding your Cellphone horizontally, showing your role as an active student to have a cleaner Air.
Please send us your clips not later than Monday to your homeroom teachers.
Many thanks