I Traveled Through Time and Became a Useless Prince, and the Former Emperor Forced Me to Ascend the Throne?

[System + Summoning + Machiavellian Strategy + Decisive Killing + The further you go, the better it looks] Lin Zheng was exhausted after an endless winter battle in hundreds of districts. An accident occurred during the meal, and he traveled through the fantasy world to the Daqian Dynasty and became the third son of the emperor. After the death of his mother, Lin Zheng gave up the throne and became a good-for-nothing third prince in the court. However, when the emperor died, the throne and the imperial seal were handed over to him. For a time, the eyes of the powerful officials in the court, the current queen, the emperor's brothers and the emperor's brothers... All focused on him. The best outcome is to be a puppet emperor until death! When surrounded by enemies, he awakened the endless summoning system. At the beginning, he obtained the supreme skill of the human race and the eighty-year cultivation initiation, and also summoned the ancient evil to Dian Wei. Overnight, he went from a good-for-nothing prince to a powerful warrior. In order to survive, he relied on the system to summon Yang Sixu, Zhuge Liang, Jia Xu, Huo Qubing, Yue Fei, Xue Rengui, Bai Qi, Wei Qing... Since then, he has been conquering all the way, starting from dynasties to all heavens and realms. Dian Wei: "Lord, I'm here to help you!" Zhuge Liang: "Liang is willing to do your best for Your Majesty." Bai Qi: "I am willing to expand the territory for your majesty and pacify the eight wastelands!" Huo Qubing: "Your Majesty, if the foreign countries are not destroyed, why do we call home?... Bai Qi, please leave some military merit for me!!" Jia Xu: Your Majesty, I have a plan to destroy the invading enemy.