What short message do I need to send to open idle traffic?

The steps for China Mobile customers to handle free traffic services are as follows:

1. Send "Idle Time Traffic" to 10086.

2. 10086 After receiving the SMS, it will reply to the SMS to confirm the subscription to the service, and directly reply "Yes" to open the free time traffic.

Idle time traffic package is a traffic package for customers who need to surf the Internet at night (23: 00- 07: 00 the next day).