The Planned Student Program is opened separately in Italy for Chinese students. Students from other countries all participate in the summer general pre-registration (the Chinese become international student pre-registration to distinguish it from the Planned Student Pre-registration), and the requirements must be You must have language scores (those who pre-register for courses taught in Italian must have an Italian language certificate, and those who pre-register for courses taught in English must have IELTS or TOEFL scores) can participate in pre-registration.
Planned students can take language classes in Italy in advance without Italian language scores (extended from the original 6 months to 8 months, and last year to 10 months. This year it is very likely to be extended to 11 months.). The difference is only in the language requirements.