I Chinghexagram 01, depicted |||||| is named 乾 (qian2), Force. Other translations: R. Wilhelm/C. Baynes, The Creative; E. Shaughnessy (Mawangdui), The Key.
Inner (lower) trigram is ☰ (||| 乾 qian2) Force = (天) heaven
Outer (upper) trigram is ☰ (||| 乾 qian2) Force = (天) heaven