As for 'Advanced Energy Sword Mastery,' it's also a type of output skill, specifically an energy system 'Sword Control Techniques,' controlling energy swords. It's somewhat similar to the weapon technology of 'Energy Solidification,' which is crucial for developing 'Solidified Energy Weapons.' In Gao Gong's own faction, they can already develop 'Large Energy Weapons,' like those configured large swords for mechas.
However, 'Energy Weapon Technology' is quite unique; it's easy to make them bigger, but very challenging to compress them into something smaller. To have 'light sabers' in everyone's hands probably won't be possible until the faction enters Tier 3.
As the saying goes, 'When technology is insufficient, superpowers fill the gap.' The Tier 3 skill 'Advanced Energy Sword Mastery' conveniently allows Gao Gong to solidify 'Energy Laser,' also enhancing the lethality in close combat.
