Versatile Mage: My Undead System Goes Straight to the Underworld

[Group taunting summons] + [Save the tragedy as much as possible] + [Invincible] Su Qing travels through the world of a full-time mage, and becomes an orphan at the beginning and is adopted by an old monk from Lingyin. It wasn't until he was sixteen years old that he awakened himself into the undead system. It was also the arrival of the undead system that brought the golden finger that he had been waiting for for sixteen years. His golden finger is not the so-called system, but the soul of Houtu. Moreover, Su Qing's undead system is different from others. His undead system leads directly to the underworld. Is the Servant Warrior strong? I have Yin soldiers and Yin generals! Is the ruler strong? I have the Ghost King, the Yin Shuai and the Judge! Are the emperor monsters strong? I also have the Ten Palaces of Yama and the Ghost Emperor of the Five Directions! The dominating emperor, is the rooftop emperor arrogant? I have Bodhisattva Ksitigarbha, Emperor Fengdu, and Emperor Dongyue!