"Are you confessing to me how to use 'Bloodthirst frenzy'? The more Liu Zhenhuan listened, the more amusing he found it. However, like many Summer Palace Warriors, he subconsciously tightened his grip on the weapon in his hand, quietly testing whether the 'Bloodthirst frenzy' could work on him, as the Tenth Prince mentioned."
Indeed, simple and easy!
Relying on the anger to produce 'Self-initiated Berserk', it seems that all it requires is concentrated self-hypnosis, then quickly rolling the breath and blood flow, followed by a channel for guided release - the weapon, and the first feature of 'Bloodthirst frenzy' is born, with the weapon being coated in an even layer of static blood!
Such a simple Berserk process, yet no strong warrior had thought of it throughout Beamon's long history!
To quote a common saying, this might be an ideological problem.