How to fill in the verification code of China Unicom?

The first step: graphic verification usually gives a graphic, and then gives four choices, including letters, numbers and so on. Step 2: First, drag, the dragged picture is the same as the original picture, and second, manually enter the corresponding number. Step 3: First, the picture text, click to select the corresponding text. Step 4: If the input error is displayed, it is recommended to refresh the page, observe it carefully, and input it according to the corresponding picture verification method.