Yes Rain class and Tencent meeting can easily sort out attendance records and show absenteeism, but the interface of rain class is a bit fancy and uncomfortable to use. Rain Classroom is a new intelligent teaching solution jointly launched by Tsinghua University and Tang Xue Online. It is the latest research achievement of the Online Education Research Center of the Ministry of Education, and is committed to providing digital and intelligent information support for all teaching processes quickly and free of charge. Tencent Conference is an audio-video conference product under Tencent Cloud, which was launched at the end of February 20 19. It has the functions of online conference for 300 people, one-click access to the whole platform, intelligent noise reduction of audio and video, beauty, blurred background, locked conference, screen watermarking and so on. The software provides real-time screen sharing and supports online document collaboration.