Ling Cage: With an MC's Physique, I Demolished the Tower and Begged Maidu to Take Me In

[One Female Lead: Mai Duo + MC System + Leveling and Romance + No Spoilers for the Protagonist] The protagonist, Tian Qi, is a college student who accidentally transmigrates into the world of Spirit Cage and becomes Dust Folk 4399, a low-ranking resident of the Lighthouse. He awakens an MC System that grants experience points for defeating targets. He can use them to exchange for items from the block world and improve his PvP, parkour, quick-building, and other abilities. As a member of the Dust Folk, he is constantly bullied and cast aside at will. Gradually, he shuts himself off, intent only on protecting himself. When he exchanges experience points for a world map, he discovers other survivor groups on the surface, along with settlements that are far more prosperous. The fire of revenge is kindled. He summons Wither Skeletons to throw the Lighthouse into chaos, uses potions of Slowness and Weakness to take revenge on the Light Chasers, then seizes the moment to escape his cage with Ran Bing and Mark, using Elytra to fly away. But on the way to Dragonbone Village, the three are attacked by Polar Maw Beasts. Just as Tian Qi is near death, Mai Duo saves him. As he spends time with the kindhearted Mai Duo, he emerges from the shadow of betrayal. From then on, Tian Qi stands shoulder to shoulder with Mai Duo and the companions from Dragonbone Village to fight the Mana Ecology.