Plaso is an interactive learning application based on the iOS platform created by Plaso Network Technology Co., Ltd. for schools to realize interconnected education. Students can watch the course at any time without meeting the teacher, ask questions to the teacher, and get the teacher real-time or non-real-time responses. 【course】 The course is a video explanation made by the school for a certain knowledge point (key, difficult, and doubtful point) or a certain topic. Students can review the course repeatedly at any time. 【Tutoring】 Students can ask questions and get answers to teachers in a timely manner by taking pictures, recordings, etc. through the tutoring module for various difficulties encountered by students in their learning. 【Real-time class】 After the school or teacher initiates the class (initiated using the PlasoT), students can interact with the teacher online after entering the real-time class after receiving the notification.