Understanding cultural background will level up people maturity in communication context. Thus, Cross-cultural Understanding Coursebook: Proposition and Case Study is presented to support the process of acknowledging cultural identities, existing values, widespread stereotypes, culture shock complication, intercultural communication, and various world etiquettes. This book additionally contributes proposition and case study to balance the theory and practical comprehension, in order that reader’s critical thinking would be invigorated. The updated information related to social life, education system, work ethics, personal relationship, and table manner standardization are elaborated insightfully to increase cultural awareness, because the more respect we have for others in different cultural background, the more peaceful life will be.