Forecast refers to the need to accept the transfer. Colleges and universities want to publish information on their graduate websites and receive relevant information about transferring candidates. Generally speaking, they fill out some forms or send some emails on the website. This work starts with the results of various schools, in order to get good students.
Some schools, if you don't make predictions and leave information in your own school, will enter the school's transfer registration system and will not accept formal transfer applications, because by the time the transfer system is opened, all good schools will have finished the second interview.
Some schools don't have forecasts.
Official refers to the online dispensing system of China R&D, which is the website when you sign up. Only when you enter this system, enter the adjustment, enter the second interview, pass the exam, wait for admission, you are a new generation of graduate students.
If you have pre-adjusted before the system starts, even if you have a second interview and the tutor takes a fancy to you, but you don't enter the system operation, it is useless.