Beijing mobile phone card wechat can't be opened. Can I do it in Hebei Mobile Business Office?

Yes, or you can go to the online business hall yourself.

China Mobile Online Business Hall is an online self-service platform provided by China Mobile for customers to accept business, promote marketing and inquire information. "China Mobile Online Business Hall" is divided into self-service online business halls of four major customer brands: GSM, M-Zone, Shenzhouxing and group customers. China Mobile Online Business Hall has set up a unified user login interface for different customer brands, but users of different brands see different interfaces and functions after logging in. In the online business hall, in addition to the functions of historical detailed list, monthly bill, self-written short message, integral record and basic business handling that users of GSM, M-Zone and Shenzhouhang all have, users of GSM provide differentiated functions such as online payment and real-time inquiry of telephone charges, while users of M-Zone provide differentiated functions such as merchants in M-Zone, BBS and games, and users of Shenzhouhang provide differentiated functions such as inquiry of mobile phone balance.