Real-time Chatting System

1. Chat group sorting and unseen message number display

2. Real-time chatting (text messages sending, documents sharing)

3. Chat group information view and management

4. Create new chat group

5. Join existing chat group

Quiz Creating and Responding System

1. Quiz group sorting

2. Quiz Creating (only for teacher)

3. Quiz Answering (only for student)

4. Quiz question updating (only for teacher)

5. Quiz question sorting

6. Quiz question information and statistics display (only for teacher)