The Thermal Plant has two entrances, both located on opposite sides near the bottom.
Lu Yun had brought two of each Precursor Ion Cube, except for the blue one. The blue Precursor Ion Cube was located inside; he would need to use a purple Precursor Ion Cube to unlock the force field console in order to retrieve the blue one from within it.
Only the blue Precursor Ion Cube could open the force field console of the Primary Containment Facility.
Chapter 262