How much does China Unicom charge for the accelerated ice cream package?

After the total amount of Internet access reached 40GB in that month, you can still surf the Internet for free, but the network speed will be reduced. If you need to restore the original network speed and continue to use it, you can order the speed-up package of 15 yuan 3GB traffic according to the SMS instructions, and the network speed will be restored. If it is not cancelled, the high-speed traffic will be automatically renewed after use.