With reader's card or Hainan social security card. Haikou Longhua Library can go to the self-service book borrowing and returning machine with the reader's ID card or Hainan social security card, and enter the password according to the prompt for self-service operation.

1. After entering official website of Haikou Longhua Library, choose to borrow and return information.

2. Log in to your library, that is, enter your account number and password and enter the home page of borrowing information.

3. Enter the front page of the library, first check the personal identity information, and then consult your own borrowing information. 4. Select the corresponding borrowing return information query, and the current borrowing bibliography, borrowing date and return date will pop up. At this point, remember the return date of the corresponding book, and then exit the system.