(PS: Despite all precautions, I still managed to infect my family. My child started coughing and running a fever in the wee hours of this morning, so I rushed him to the hospital, only to find the place alarmingly crowded... I will only be posting one chapter today. When will this damned pandemic ever end!)
The heavy nuclear fusion reactor, this source of energy is a step above the stable hydrogen fusion reactor, aligning with the technological standards of Second Level Cosmic Civilizations at their peak and the beginning of Third Level Cosmic Civilizations.
In the movie "The Wandering Earth" that Lu Yuanming once watched, the source of energy for the planetary engines was precisely this, with an output about five to ten times higher than that of a stable hydrogen fusion reactor of the same volume.