I am in Chengdu, but my girlfriend is in Chongqing. I use the dynamic zone.

I only found one that I could afford.

Specifically, it is like this:

Long-distance call discount-2 yuan every month-0.20 yuan \ minute for calling domestic mayors by direct or IP phone (except Hong Kong, Macao and Taiwan).

Code: edit the short message "KTCHYH" to 10086.

I'm also using it at present. I hope this helps you. . .