According to the "Accreditation Criteria for 'High-level and Top-notch' Foreigners in Hainan Free Trade Port", high-level talents refer to those who are in accord with the “Classification Standards for High-Level Talents in Hainan Free Trade Port”. These talents are classified into categories A, B, C, D in line with the standards laid down by market recognition, professional community and social recognition. “Classification Standards for High-Level Talents in Hainan Free Trade Port” is adjusted from time to time according to the economic and social development and the demand for talents.