1, Tencent Classroom: This is an online education platform that provides online video courses for Chinese classes in Hong Sean. Students can learn through Tencent classroom website or mobile phone application, and interact with teachers and other students.

2. Offline training institutions: This refers to physical training institutions that provide face-to-face instruction, and Hong Sean Chinese classes can also study in these institutions. Students need to go to training institutions for face-to-face communication and study with teachers and other students.