graduation camp

P.6 students of our school will have a graduation camp on 13-15/4  to mainland china.

we will go to a school with students who belongs to poor farming families. we will help them create their school library, teach them some basic english skills and hold game booths for them.
after that, we will go to their homes and have lunch with their family.

but mr tsang said we are not allowed to bring any "gips". how will we bring 3days things with only one backpack?! anyway, i will go as it will be sort of a last chance for me and my friends to spend time together...