Pure time travel + no system + sisters + first person, with a strong sense of substitution. "Zhaolin" graduated from Xi'an University of Technology in the 21st century. His lover and brother in his previous life betrayed him. He jumped into a river and committed suicide in anger. When he woke up, he actually traveled to 630 AD. Year, a Yong'an dynasty that was disconnected from history started with no father or mother, no one and no worries. Fortunately, they were accompanied by a pair of beautiful sisters, combined with modern knowledge, through business and imperial examinations, they climbed to the top step by step, until they took over the imperial power and ruled the world!
