1: HA 2290/2300, with the invention of hyperlight-speed engines, the Age of Interstellar Exploration began, marking humanity’s entry into the ranks of interstellar civilizations.
2: HA 2590, with the unification of human territories under the Jerby Dynasty, the Age of the Dark Empire began.
3: HA 2644, with the fall of the Jerby Dynasty, the Silver Technocracy rose to power and established a new regime.
4: HA 2739, the Morocrys Dynasty was established, initiating resistance against the rule of the Silver Technocracy.
5: HA 2811, the Silver Technocracy was overthrown.
6: HA 3020, the reign of the Morocrys Dynasty came to an end, and the rule of the Hive of Shadows began.
7: HA 3100, the reign of the Hive of Shadows came to an end, marking the fall of the Dark Empire. Over the following 400 years, human territory gradually came under the control of the four major powers that exist today.
8: HA 3530, The Fluvina I System was discovered by the Okilok Human Federation, marking the beginning of initial contact with the Fluvinian civilization.
9: HA 3552, The Ring World Project was approved and entered the practical planning phase.
10: HA 3581, The Fluvina System Purification Campaign was launched.
11: HA 3611, construction of the Ring World officially began.
12: HA 3671, Section A of the Ring World was completed; Section B construction passed the halfway mark. Lai arrived in New Jackson City on the Ring World.
A: Age of Interstellar Exploration
B: Age of the Dark Empire
B1: The Jerby Dynasty
B2: The Silver Technocracy
B3: The Morocrys Dynasty