Chang'an City, the capital of the Tang Empire. The richest and most beautiful city on the continent of kings, the city with a long history, is also the place with the most secrets and crimes.

The streets are four vertical and eight horizontal, full of people, high buildings and ridges, row upon row. A variety of shops and restaurants full of wine...... Three hundred and sixty lines, mixed in between.

With its prosperity and mind, Chang'an City continues to attract people from all over the continent of the king. Merchants who come and go to trade, wanderers who beg for a living, preachers who communicate with each other...... Even the hybrid of the demon race, all of them are tolerated by it.

"The sword of the river comes from the sky, and there is no regret in the end", a white-clothed, heroic and elegant, and graceful swordsman is in the tavern of Changle Fang, chanting poems and drinking wine.

He was surrounded by people from Chang'an who stopped to watch, some covered their mouths and smiled, some cast envious glances, some pouted and disdainful, and more were passers-by with indifferent expressions.

He is the number one swordsman in the world, Li Bai, who gave him the nickname "Sword Immortal". Back then, he neither relied on mechanical techniques nor demonic secret techniques, but only relied on his unparalleled swordsmanship to kill countless demons in the Western Regions.

The Chang'an city wall is full of organs, and it is densely packed with vitality cannons, but he can come and go freely. Even in the Daming Palace, where the palace is strictly forbidden, he can also enter the realm of no one. When he first entered Chang'an, he also left a poem on the city gate. This is the third time he has entered Chang'an, but people don't know why he came.

"It's all out of the way, Master Di is here to handle the case." A young man with big ears and a red brocade robe squeezed into the crowd, followed by a dignified and unsmiling official, Di Renjie.

"Li Bai, what are you doing in Chang'an City again? The first two times you made such a big fuss, the empress cherished her talents, and she didn't hold her accountable, and you still came to cause trouble! Di Renjie crossed his hands behind his back and said sharply.

"It turned out to be Lord Di, the guard officer of Chang'an, I haven't seen you for a long time." Li Bai saw Di Renjie's eyes blazing and kept silent. He also said, "Don't be angry, Lord Di, I'm just passing by the treasure land and borrowing a bowl of wine to drink."

"Oh, yes! You said the same thing last time, but you went back on your word and broke into the Daming Palace to assassinate the empress! The young man in red stepped forward and said indignantly.

"Yo, isn't this my little brother Yuanfang, I haven't seen you for a few years, I haven't seen much in size, but my temper has grown a lot." The surrounding crowd giggled, and Li Bai picked up the wine bowl and drank it all.

Li Yuanfang gritted his white teeth and secretly took out the sickle flying blade from his back, but was stopped by Di Renjie in time.

"Li Bai, I will believe you for the time being, if you dare to plot against you, I will not forgive!" Di Renjie still put his hands behind his back and turned away.

Li Bai's long smile came from behind......

"Master Di, why don't you let me catch him?" Yuan Fang said suspiciously.

"Li Bai's 'Qinglian Sword Song' is the best in the world, and you and I can't trap him alone. He sneaked into Chang'an again and again, he must have an ulterior motive, and there is even a mastermind behind him, you will secretly follow him tonight, monitoring his every word and deed, every move. Di Renjie said anxiously.

"Yes, my lord." Yuan Fang replied steadily.

Under the calm exterior of Chang'an City, how many people are secretly lurking in, surging in the undercurrent, and ready to move...... This group of doubts lingered in Di Renjie's heart for a long time.