Is there any transportation pass in Guangzhou including both, Metro and buses?

Hi there,

I'm planning to get the 3-day Metro pass in Guangzhou, but I'm just realizing it does not include bus-rides, right? So, just wondering, is there any similar transportation pass which would cover both, Metro & buses? I don't know yet if I'll have the need to take any buses, I'm asking to be informed, just in case...

BTW, tram rides are covered by the Metro pass, right?

Thanks and regards.