#55 CITADEL: CANOPY: ABUNDANCE: ZENITH 2018

#55 means CITADEL or CANOPY (under heaven) also ABUNDANCE and reaching the ZENITH which cannot be maintained. This hexagram was pulled by King Wu, who avenged his father King Wen. King Wen is said to have written the philosophy of the I CHING after being imprisoned by the Shang Dynasty leaders. He died in their prison. 
King Wu inquired of the I CHING what action he should take while entering the mourning period for his father. It advised against staying still. At the time of King Wu's inquiry, there was an eclipse and the pole stars were seen a noon. He entered the battlefield of war with his father's coffin accompanying him and his troops. They defeated the SHANG.
#55 is about expanded intelligence, portraying an energetic movement.
"Crossing the bridge" is engaging the enemy.
In #55, an offering of rice grain supports the crossing over into victory. 
As no ZENITH can ever last, at the peak the movement we "tip over into the next hexagram" in THE HOUSE OF WATER: #36 DARKNESS.