Zhou Jing'an was silent, then said, "The scope is too broad. It would be time-consuming and laborious to investigate. It's like looking for a needle in a haystack."

Feng Yu nodded. "This is not a good way to investigate. I called you here today to discuss whether we can start with Li Qi and break a loophole."

Feng Yu got angry when he mentioned it. He frowned and cursed like a child, "It's all that old man's fault. Why did he confer so many titles of nobility? Why did he reward so many identical Shu brocades?"

Although Zhou Jing'an thought it was childish for him to curse like that, he still wanted to complain.

He looked at the person in the painting and sighed.

This painting was created by Li Weizhen, a great artist from the previous dynasty. He was good at painting landscapes, but the special thing about this painting is the two people in it.

Two men are sitting at the foot of the mountain drinking together. One of them is facing the painter. He has his hair tied up in his ears, is covered with a felt and has a sword on his body. His head is covered with red silk and his clothes are purple.

One of them was lying half sideways, and his face could not be seen clearly, but it could be seen that the material of the clothes he was wearing was Shujiang brocade with red lion and phoenix patterns.

The former's attire and decoration were those of an aristocrat, and judging from his facial features, one could vaguely identify him as Ji Cang, the third prince of Nanzhao who was very popular at the time.

The other one is not sure who it is.

But the Shujiang brocade with red lion and phoenix pattern he wore was a little special.

The signature says that this painting was created at the end of November in the 20th year of Shunyou. The patterns of Shu brocade are complex and diverse, but the red lion and phoenix pattern was not introduced into the palace until the end of October of the same year. This is the first batch of Shu brocade with this pattern.

This Shu brocade is precious, and it can be used to determine the identity of that person.

But it just so happened that the foolish emperor of the previous dynasty got drunk and was in high spirits that day. With a wave of his hand, he awarded all the Shujiang brocade with red lion and phoenix patterns to all the dukes and marquises.

Moreover, this emperor was a man of temperament. He could confer titles and honors to people at will whenever he pleased, so there were as many as twenty-nine dukes and marquises at that time!

Although some were reduced and excluded after the establishment of the Great Gan, there were still as many as eighteen left over from the previous dynasty!

This significantly increases the difficulty of finding the identity.

"That old man can't even rest in peace after his death, and he has caused such a huge mess!" Feng Yu stood there with an angry brow, pointing at the desk and cursing, poking the wooden table so hard that it made a sound as if he was going to poke a hole in it.