Social media marketing, campus activities, preferential activities, recommendation rewards, cooperative promotion, popularization of financial knowledge, and diversified promotion channels.

1. Social media marketing: Use social media platforms for marketing to promote the advantages and features of Bank of China credit cards to college students. You can create interesting, concise promotional content that will attract the attention of college students.

2. Campus activities: Cooperate with universities to organize credit card knowledge lectures, financial knowledge competitions and other activities to let college students understand the functions and advantages of Bank of China credit cards through interaction and participation.

3. Preferential activities: Launch special preferential activities for college students, such as first-time card application discounts, cash rebates, points redemption, etc., to attract more college students to apply for Bank of China credit cards.

4. Recommendation rewards: Launch a recommendation reward program to encourage college students to recommend other students to apply for Bank of China credit cards. This can quickly expand the credit card's popularity and market share.

5. Cooperative promotion: Cooperate with merchants around universities to launch joint preferential activities, such as discounts for purchases at merchants with Bank of China credit cards, etc., to attract more college students to use Bank of China credit cards.

6. Popularize financial knowledge: Through official websites, WeChat public accounts and other channels, popularize financial knowledge and financial management skills to college students, help college students understand how to use credit cards and precautions, and improve financial literacy.

7. Diversify promotion channels: In addition to online channels, you can also promote Bank of China credit cards to college students through campus promotion activities, campus job fairs, etc. to increase visibility.