School open day, as its name implies, is the day when the school opens to the outside world.
The typical campus open day of China University begins with high-tech consulting activities. Therefore, the campus open days of many universities are arranged during the simulated college entrance examination. Before filling in the volunteers, they are often dubbed as "ingenious consultation meetings".
It is the practice of international high-level universities to choose a specific day to hold the campus open day. The "Campus Open Day" activity takes the form of a combination of centralized opening and daily opening. Some schools are actively promoting the normalization of campus opening and holding online campus open days.