for a quantum system, before you define your H for it, and
从哈密顿量H中提取 system 信息，从它的本征能谱来描述 system,

you have to first figure out the "cruelest cut" of the system:
dthe integrated information  as the mutual information
I for the \cruelest cut" (the cut minimizing
I):

挖心 first，然后再挖肉(:)

how do you do that to a girl?

well, red gen II in china knows the "know-how"