Dr. Mei's plan wasn't complex, it could even be called extremely simple.
To sum it up in one sentence———build several high-power Destruction Energy Emitters, then directly launch the energy. After all, the law of conservation of energy must still be observed. But if, as the Tribunal says, Destruction Energy is indeed the key to the emergence of the Herrscher, then no matter where you do this on the planet, it's not safe; thus, simply launch it all into space, and there wouldn't be any problem!
Originally, Dr. Mei's idea was to disperse the emission to exhaust all the Destruction Energy, but Duanmu Huai wanted her to fix the emission location in one position, which somewhat surprised Dr. Mei.
