what is this text: =B0=A1=C1=CB ... and how to convert it to normal text?

I found this format of text:

=B0=A1=C1=CB,=C4=E3=D2=B2=C3=BB=C1=AA=CF=B5=CE=D2,=D7=EE=BD=FC=CA=C7=B2=BB=CA=C7=  =BA=DC=C3=A6=B0=A1  

and people say it could be converted as a sentence of Chinese:

啊了你也没联系我最近是不是很忙啊  

so, what is the =B0=A1=C1 ? and how to decode/convert it ? ( some people said =B0=A1= should be considered as =0xB0=0XA1, and they are hex. I don't know how to do this.

thanks a lot!

refer to: https://www.zybang.com/question/8e203c75cde435d5260eff1757699f8d.html

https://stackoverflow.com/questions/65350966/what-is-this-text-b0-a1-c1-cb-and-how-to-convert-it-to-normal-text December 18, 2020 at 10:17AM