What do the trisolarans want?

Could you please elaborate on the motivations and desires of the Trisolarans? Are they seeking resources, expansion, or perhaps a new home in the vast expanse of the universe? What drives their actions and decisions, and how do they perceive the universe and its inhabitants? Is there a deeper, underlying purpose to their existence and goals, or are they simply driven by a primal urge for survival and dominance? I am genuinely curious to understand the mindset and intentions of these extraterrestrial beings.