I Chinghexagram 07, depicted :|:::: is named 師 (shi1), Leading. Other translations: R. Wilhelm/C. Baynes, The Army; E. Shaughnessy (Mawangdui), The Troops.
Inner (lower) trigram is ☵ (:|: 坎 kan3) Gorge = (水) water
Outer (upper) trigram is ☷ (::: 坤 kun1) Field = (地) earth