1、 Introduction

It emphasizes that international Chinese language teachers need to possess professional knowledge of Chinese language, master foreign language and culture, and teaching methods. The international education of Chinese language in the 21st century should aim to cultivate cross-cultural communication skills. The book '50 Cases', co authored by Chen Dongdong and Cynthia W. Fellows, provides 50 teaching activities based on communicative approach theory aimed at improving students' Chinese communication skills. These activities are designed to be interesting, meaningful, and challenging, providing learners with authentic language materials for communication, creating a relaxed and enjoyable learning environment, and promoting the development of students' language communication skills.

2、 The function of the teaching activity "50 Cases"

Explored in depth the role of the "50 Cases" teaching activity in enhancing students' Chinese communication skills. Through the integration of modern cognitive concepts, the activity design takes into account the thinking patterns and psychological characteristics of native English speaking students, using game forms and emphasizing the repetition and interval of language practice to promote students' perception, memory, thinking, and imagination abilities of Chinese. Activity design emphasizes diversity, including single lesson and multi lesson teaching, as well as training for basic language points and comprehensive abilities. Through group competitions and other activities, students' potential is stimulated, and teamwork and adaptability to the environment are cultivated. At the same time, the activity content is rich and diverse, avoiding the monotony of traditional teaching, such as "building a word network" and "similar but not identical" activities, to help students understand the subtle differences between compound words and synonyms in Chinese. In addition, the activities also enhance the fun of language learning, such as "idiom skits" and debate sessions, allowing students to improve their communication skills and deepen their understanding of language phenomena in a relaxed and enjoyable atmosphere.

3、 Characteristics of the Teaching Activity "50 Cases"

The teaching activity of "50 Cases" is based on the theory of communicative approach, aiming to create verbal communication scenarios and improve students' Chinese communication skills. The characteristics of the activity include: (1) student-centered approach, stimulating learning interest, such as "quick questioning", etc; （2） Based on the principle of applying what is learned, create real-life communication scenarios such as "first encounter quantifiers"; （3） Combining intense competition with liveliness, cultivating students' creative use of Chinese language, such as individual and collective competitions; （4） Pay attention to context and turn classroom teaching into a real communicative process, such as "daydreaming"; （5） Emphasize the "game plot" and have complete and interconnected details, such as Bingo and other game formats. Each activity has a "focus" and "steps", with clear language content and purpose, specific methods and approaches provided, and some activities also include "attention" prompts.

4、 Conclusion

A review of "50 Cases" was conducted, pointing out that its activities are targeted, meaningful, interesting, and challenging. At the same time, the shortcomings of the book were pointed out, such as the lack of evaluation criteria, insufficient cultural activities, and the absence of Chinese character memory methods. Emphasis was placed on the correlation between language learning and cultural background, as well as the role of teachers in helping students overcome learning difficulties and maintain learning interest. 50 Cases "provides rich teaching activities for students with different backgrounds and levels, arranged in both Chinese and English, suitable for international Chinese teachers to use, and can also serve as a reference for learning teaching methods.