Core Viewpoint - The article provides a comprehensive guide for using credit cards abroad, emphasizing the importance of having a chip card for international transactions and offering tips for card management before traveling. Group 1: Preparation for International Travel - Chip cards are essential for overseas payments as most merchants in regions like Europe, Japan, South Korea, Singapore, and Australia prefer chip card transactions over magnetic stripe cards [1] - Different chip cards can be applied for based on travel needs, such as the Dragon Card World Elite Platinum Card for tourism or the Dragon Card Study Abroad Credit Card for students [1] Group 2: Card Management - Users can upgrade their UnionPay Visa dual-standard magnetic stripe cards to chip cards for free through the China Construction Bank mobile banking app [3] - In case of card damage, users can request a replacement card via the mobile banking app [4] - Users can check and manage card status, including unlocking cards that are under various control conditions, through the mobile banking app [4][5] Group 3: Card Activation and Validity - Credit cards must be activated before use, and users should ensure that their physical cards are activated [5][6] - The bank automatically renews activated credit cards before expiration, and users should activate new cards promptly upon receipt [7] Group 4: Security and Limits - Users can set up a security lock for their credit cards and adjust overseas transaction limits through the mobile banking app [8] - Users can also reset transaction withdrawal passwords and manage credit card limits via the app [9][10] Group 5: Travel Notifications and Support - It is recommended to register travel dates and destinations with the bank to enhance transaction security and reduce the likelihood of transaction failures while abroad [12] - Users are encouraged to follow the bank's WeChat service account for real-time transaction alerts and assistance with overseas card issues [13]