BEC is divided into primary, intermediate and advanced, with different difficulties but the same problems. BEC junior is equivalent to CET-4, and the BEC examination syllabus clearly stipulates that the English level of BEC junior candidates should reach CET-4.
The intermediate difficulty of BEC is equivalent to the difficulty between CET-4 and CET-6, and the advanced level of BEC is equivalent to the difficulty between CET-6 and TEM8.
Why do BEC beginners need to reach CET-4? That is English business English, and the ultimate emphasis is English. Without a solid English foundation, business English cannot be established systematically. Therefore, to learn business English, you must have an English foundation.