I've been able to find out more about this cake:
What does the label on the right say? Is it: 馬幫茶 ? I think I got the rest correct:
Where would I be able to buy more of this cake? It was very good!
One of the intentionally aged teas, Pu-Erh has a loyal following.
Thanks! I tried taobao and baidu but no avail. I will ask my friend to send me some more of this cake so I can enjoy it as much as I can I don't think she drinks too much tea so I don't feel bag hogging her stash!