Well, there will be professional phonetic courses and exams when learning phonetic symbols, but the degree of attention is not high. Because there is no voice test in TEM 4 and TEM 8. And many people can't correct it, because many years of pronunciation habits can't be changed at once. And everyone has their own language blindness, and there are always some wrong sounds. Therefore, English majors will have more accurate phonetic symbols than non-English majors, but everyone's situation is different.