How many calls are included in the China Unicom Spring Card package?

The Spring Card (discontinued) has a monthly fee of 69 yuan. The package includes 4GB of nationwide traffic and 300 minutes of domestic voice. Domestic traffic beyond the package is 10 yuan/GB. It is valid for the current month and automatically renewed. Domestic voice calls are 0.1 yuan/minute, and nationwide incoming calls are free of charge. Short and multimedia messages are 0.1 yuan/minute, and domestic incoming calls are free of charge, including caller ID.