To break a hard puer discus that has already been split into two halves, hold the corner of one half at the breaking edge and bend a few times to loosen up the leaves. Then use a thick metal letter opener or something like that, such as the flat end of the spoon handle etc to ply into the center of the thickness of the loosened corner, on the broken side. Swivel the metal inside the thickness a few times to loosen up more the leaves. Hold the corner and bend to break the targeted portion.
As mentioned a few times in the Tea Guardian site, the compressed discus is not an ideal way of packing the tea. Where the modern tea table is rarely set up for it, the discus can be a hurdle for some people to enjoy puer. Loose tea puer is a much easier choice for you to focus in making the most of your tea time.
Chawang is right. A well matured discus is a lot more loosened for easy breaking than a new one.
