老師們的資源包 Teachers pay teachers.com
http://www.teacherspayteachers.com/
This website provides lots of resources, some are free, some are charged, and you will also find some resource about Chinese language written in English.
Class decoration
http://www.teacherspayteachers.com/Browse/Type-of-Resource/Classroom-Decorations
http://www.teacherspayteachers.com/Browse/Type-of-Resource/Bulletin-Boards