Taking My Adoptive Brother's Place as a Hostage in an Enemy Nation? I'd Rather Cut Ties with My Family

[Regret] + [A Fallen Prince Who Never Looks Back] + [Ruthless and Decisive] + [I Control My Fate, Not Heaven] + [Unifies the Seven Kingdoms] + [Master of the Three Realms]

A legendary qi-reading master lives a second life. When the empress and several of his elder sisters push him to replace their adopted son as a hostage in an enemy kingdom, and the emperor gives the crown prince’s position to that adopted son, he finally says, “I will endure no more.” One moment, he is being escorted out of the capital to serve as a hostage in the enemy kingdom; the next, he leads his household troops back to surround the palace, purges corrupt ministers and roots out the rot, then heads to Hexi to counterattack the Zhou Kingdom. Thus begins his path to unifying the seven kingdoms... He originally only wanted to become emperor in the mortal world and spend his life with the beauties of his harem. Who could have imagined that the Queen Mother of the West would warmly invite him to journey through the Immortal Realm, only to ask him to unify the Three Realms? When his elder sisters learn the truth, they all weep. Not only have they lost the chance to become princesses of the Tang Empire, they are now forever cut off from the Immortal Realm, and have inexplicably ended up in hell, where they suffer the agony of being boiled in bronze cauldrons and pierced by iron spikes.