Sentence:  As such , one cannot fully understand the thought of the pre-Han and Han periods without knowing the meanings inherent in the Lo Shu ; but , conversely , one cannot begin to understand the Lo Shu without knowing something about the world view of the Old Chinese , which they <WSD>felt</WSD> they saw expressed in it . 
Meaning of the word marked with <WSD> tags:  come to believe on the basis of emotion, intuitions, or indefinite grounds