Dear Mr. Shi - Chapter 16. Definitely, got your Achilles’ heel.

Condition 1: One yellow scarf soldier rune is satisfied

Condition 2: Kill 100 rune monsters independently

Condition 3: 5,000 times of training to kill a pig with a knife is satisfied

Condition 4: 10 Spirit Talisman Pills are satisfied

Rune unlock upgrade.

Your source runes have been promoted from ordinary quality [Yellow Turban Soldiers] to premium quality [Yellow Turban Warriors]!

- Description from novelbuddy

King Grey has unrivaled strength, wealth, and prestige in a world governed by martial ability. However, solitude lingers closely behind those with great power. Beneath the glamorous exterior of a powerful king lurks the shell of man, devoid of purpose and will. 

Reincarnated into a new world filled with magic and monsters, the king has a second chance to relive his life. Correcting the mistakes of his past will not be his only challenge, however. Underneath the peace and prosperity of the new world is an undercurrent threatening to destroy everything he has worked for, questioning his role and reason for being born again. 

I opened a pet shop, but on the very first day, I received a panda! What the hell? Help, I don't want to go to jail!

Transcending to the Otherworld, with the power of unique Attributes, to become the ultimate sovereign.Welcome to my world....Accidentally transported to the vast and boundless world of immortals and heroes, where the strong are revered and immortals and demons coexist.MC discovered that he possessed a peculiar attribute ability, which enabled him to quickly rise on the path of cultivation.With this talent, I have gone through numerous challenges and trials, constantly breaking through my own limits, mastering unparalleled immortal techniques, refining incredible artifacts, and forming an unbreakable bond with many immortal warriors and powerful individuals