Global Killing: Skills automatically upgrade in seconds SSS

[Unlimited, upgrade to SSS in seconds] Tens of billions of people from around the world descended on the killing world, where monsters are everywhere! Killing! Plundering! Is the only rule of survival!
Chen Mu is also one of the ten billion people. At the beginning, he is bound to the system, and any skill will automatically upgrade to SSS in one second!
[Congratulations on obtaining the Fireball Technique, which is automatically upgraded to SSS-level World-Destroying Skyfire! ]
[Congratulations on obtaining the Novice Healing Technique, which is automatically upgraded to SSS-level Angel Blessing! ]
[Congratulations on obtaining the 1% speed bonus, which is automatically upgraded to SSS-level Infinite Teleport! ]
[Congratulations on obtaining the F-level Summoning Skill, which is automatically upgraded to SSS-level Undead Summoning! ]
…
The road to infinite evolution begins from this moment!