Gong Zizhen resigned his post in the jihai year and wrote his Miscellaneous Poems of the Jihai Year along the way.
Tips
culture
己 is the sixth Heavenly Stem and 亥 the twelfth Earthly Branch, the Pig, so every 己亥 year is a Year of the Pig: 1839, 1899, 1959, 2019 and next 2079.
memory
Three look-alikes differ in how far the stroke on the left climbs: open in 己 (self; the sixth Stem), half closed in 已 (already), fully closed in 巳 (the sixth Branch).