Speaking Mandarin with an accent does not necessarily mean that it is not professional enough. Professional competence mainly depends on a person's knowledge, skills and experience in his field, not pronunciation. Although in some situations where standard Mandarin is required (such as broadcast hosting, Mandarin teaching), accent may affect work performance, but in most professional fields, clear expression of ideas is the most important. Many outstanding professionals speak with local accents, which does not affect their professional reputation and achievements in any way. In fact, accent is a manifestation of cultural diversity and part of personal identity and background. The key is whether to communicate effectively, not the pursuit of perfect standard Mandarin pronunciation.