After the Mass-Energy Equation was proposed, these two issues troubled humanity for over a hundred years.
Fortunately, the data archives and drawings related to it were available in Archive 071.
After much deliberation, Lynn, at temperatures exceeding billions of degrees, planned to use laser focusing to achieve his goal, fortuitously they had previously developed laser magic; with sufficient Magic Power, they should be able to successfully accomplish this.
The remaining problem was how to confine this force!
Combining the Wizards' abilities, Lynn believed they could attempt to use magnetic or gravitational constraints!
As for which specific method to use...
Theoretically, gravitational constraint was the most reliable. For instance, the reason a star could maintain its form under fierce fusion reactions was precisely due to the balance between the gravitational pull and the internal fusion reactions.