China Construction Bank has a credit line of 36,000, Guangfa Credit Card has a credit line of 50,000 and CITIC Credit Card has a credit line of 70,000. If you want to cancel a credit card, which one is better? Before deciding which credit card to cancel, please consider the following points:

1. interest rate: compare the interest rates of three credit cards to see which card has a higher interest rate. If the interest rate of one card is significantly higher than the other two, you can consider canceling that card.

2. Annual fee: Check whether each credit card has an annual fee and the amount of the annual fee. If there is a card with a high annual fee and you don't really need the function of this card, you can consider canceling that card.

3. Offers and activities: Evaluate the offers and activities provided by each credit card to see which card is more helpful to your consumption habits. If you find that the benefits and activities of a card are not important to you, you can consider canceling that card.

4. Credit card points: Check the points of each credit card. If you have accumulated a lot of points on a card and you find the benefits and activities of this card very useful, then it is best not to cancel this card.

5. Credit history: Cancelling a credit card may affect your credit history. If you plan to apply for a loan or credit card in the future, you'd better keep a card with a good credit history.

Based on the above factors, weigh the pros and cons before deciding which credit card to cancel.