This is the 1992nd most frequent Chinese word.
立足
"立足" means "to establish oneself" or "to base oneself on."
In this sentence, '立足' is used metaphorically to mean establishing a perspective or stance focused on a particular aspect, in this case, the long term.
我们必须立足长远,制定全面的计划。
We must focus on the long term to formulate comprehensive plans.
Here, '立足' describes establishing or having a foundational presence in a specific domain or field, highlighted as the technology sector.
这个公司立足于科技领域,目标是创新。
This company is established in the field of technology, aiming at innovation.
'立足' in this usage means grounding or basing something (his creations) within a particular context or source, in this case, real life.