The objectives of this study were: (i) to compare the scores on the test between students who took a Chinese Traditional Culture course (including ancient fairy tales, traditional festivals, and ancient etiquette) and students who did not, (ii) to examine students' performance on the traditional culture after taking the Chinese Traditional Culture course, and (iii) to investigate students' satisfaction about the Traditional Culture course and the corresponding Traditional Culture teaching method. For this purpose, we recruited 90 students divided into the two experimental and control groups with 45 students in each group. Additionally, five teachers and five experts were selected as the cases for the qualitative phase. The research instruments were a questionnaire, test, and structured interview. The study had a mixed methods design. We used both descriptive (i.e., percentages, means (M), standard deviation (SD), and inferential statistics (i.e., t-test analysis) to analyze the data. The results indicated (i) students who took the Traditional Culture course had higher scores on the Chinese test than students who did not, (ii) Students' performance on the traditional culture after implementing the Traditional Culture course was improved, and (3) Students' satisfaction about the Traditional Culture course and the corresponding traditional culture teaching method was at a good level. The results showed that taking the Traditional Culture course positively affects language learning for primary students; most students are satisfied with the Chinese Traditional Culture course and the corresponding teaching method. The students highlighted the positive impact of cultural activities, such as traditional dance, music, and theater on their language development, so schools should emphasize the importance of Traditional Culture courses and enhance students' interest in learning traditional culture to improve learning effectiveness.