Can the national grid of different cities in the same province be deployed? I am in Jiaxing, Zhejiang, and my girlfriend is in Shaoxing.

It is still possible to switch to the national network across cities in the same province, mainly because it is easy for the recipient to agree, and it is generally not too difficult. However, it also involves the transfer of personal social security, which requires a transfer form to switch. It's relatively easy to get if the treatment remains the same. The key is to accept the leadership of your past power grid company and sign it.