Openly an Undercover Agent: He Gave Me Far Too Much

Lin Han was originally a disposable undercover agent sent to the Great Abyss by the Tongxuan Kingdom. But after activating the Gift-Giving System, he became an open undercover agent, revealing his identity of his own accord and using gifts and money to bind others to himself.

The protagonist joins the Demon-Suppression Bureau, an organization with extraordinary status. Using his methods to learn cultivation techniques, he also wins over many people and gradually gains a pivotal position within the bureau.

In the Great Abyss, the protagonist wins over many high-ranking officials, while also making secret deals with certain people in Tongxuan. In the end, neither the Tongxuan Kingdom nor the Great Abyss Kingdom can do anything about him.

Ultimately, whether intentionally or not, the protagonist helps the Great Abyss Kingdom defeat the Tongxuan Kingdom, then uses the power he has built to defeat the Great Abyss Kingdom and establish his own nation.