I work in Yanjiao and live in Beijing. What mobile phone card do I use?

the signal is not very good when Hebei is stuck in Beijing, but Beijing is ok when it is stuck in Hebei. Depending on what you prefer, it is recommended to use Yanjiao's card for surfing the Internet. Fifteen yuan a month. 3M traffic, the main call is .28, and there is no charge. Send 18 messages. Beijing card seems to be more expensive. Everything should be customized.