What is normal is the four corners of this place ... because it is irrational, that is, with the blessing of money (opening the light), it eats everywhere. ...
As for "Chongning Bao Tong and Taiping Bao Tong", that would be great ... just like the ancient money "Italian head" (Historical Records) ...
To tell the truth: 1 Chongning, 2 Taiping is written well and unlucky in history ... it depends on whether it is a successor or a genuine product.
If it is genuine, 1 it may be more convenient to put four ... Taiping = = nothing.