Wanderers of the Empire of the Sun

In 2225 AD, as resources became increasingly depleted, the Third World War broke out. After 35 years of war, the earth had already become shaky. In 2260 AD, the five major countries signed an integration agreement in Greenland, commonly known as the "Arctic Circle Agreement." Since then, the earth has entered the era of federal governance. In 2325 AD, the advent of the full-body space orbital solar panel means that humankind's utilization of solar radiation has reached 100%. At this point, the earth has entered the space age. This year is also known as the first year of the solar calendar by later generations. In the year 201 of the solar calendar, with the successful test of the sublight speed engine, mankind launched the plan that had been waiting for hundreds of years - the "Wanderer" plan...