This paper investigates early childhood education (ECE) teachers' self-reported and observed teacher-child interaction quality (TIQ) and the associated teachers' professional competence features using a latent profile analysis (LPA) approach to identify the variations in the quality of classroom experiences in Chinese preschools. A total of 164 female preschool teachers aged 20-58 participated in this study. The analysis and discussions focus on four identified profiles of teachers: low-quality teachers (n=9) characterised by lowest scores in both observational and self-reported TIQ; self-overestimated teachers (n=59) with relatively low observed CLASS scores but high self-reported TIQ; self-underestimated teachers (n=76) scoring relatively high in observed TIQ but low in self-assessed TIQ and low-level self-efficacy; and genuine high-quality teachers (n=20) rated highest in both observational and self-reported TIQ. Findings on specific educational and psychological characteristics of the four profiles of teachers that we have identified through an LPA provide insights into teacher training in China.