Datang: I, Prince Jiancheng, Signed in Secret for Twenty Years

Traveling through time for Li Jiancheng, he obtained the check-in system and secretly checked in at the border for twenty years! With his personal martial arts and various strange skills, he has reached the pinnacle of mankind. Rival Yuwen Chengdu! Capture and kill Yang Guang! Guard the frontier! Suppressing the Turks for decades! The name is to destroy the general in the sky! Overwhelm General Li Shimin Tiance! The prince's position was deeply rooted, but under Li Er's design, he had no choice but to escape from Xuanwu Gate to the border. Changes in Xuanwumen! Shoot Li Shimin out of his right eye! Kill several generals like Li Shimin! Occupy Goryeo! Tibet! Rome! Defeat the Turks! Build the Dragon Flame Empire! Named Dragon Emperor! On the day he ascended the throne, all nations surrendered, including Persia, Rome, Japan, and the Great Food Empire! After three months! Li Jiancheng is about to order his troops! The imperial commander personally marched all the way back to the Tang Dynasty! After breaking through Chang'an, in front of the Tai Chi Palace, Li Jiancheng coldly shouted at Li Shimin! "My stupid brother! Why don't you kneel down when you see me... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.