Poor students usually refer to those students who are unable to bear all or part of the study expenses due to various reasons such as family economy and financial difficulties. Schools, governments or other organizations usually set up financial aid programs for poor students to provide some financial assistance to help them continue their studies.

Green channel refers to the convenience and priority rights provided by some special policies or treatments for some specific groups. For example, the green channel is suitable for special groups such as the disabled, the elderly and pregnant women, and enjoys some special conveniences and priority rights in some occasions or public services, such as priority access and priority procedures.