He rolled up his sleeves, put his twisted right arm on the demon bone, and rubbed it forward and backward.

At the beginning, his movements were very slow, as if he was looking for the perfect angle and strength, and then his movements became faster and faster, so fast that the naked eye could not see them at all.

He has mastered the angle and strength, and more importantly, he has confirmed that his method is correct.

The demon bone was really special. At such a high speed, it didn't make much noise.

After a while, Jing Jiu stopped, raised his right arm and looked at it, showing a satisfied expression.

In the eyes of ordinary people, his right arm has not changed at all, but he naturally knows that some minor changes have occurred.

Yes, he is just sharpening his sword.

Many years ago at the top of Bihu Peak, he once said that he would use Liu Ada's bone to sharpen his sword. That was to scare it, but this time it was true.

The sword is no longer sharp, so it naturally needs to be polished again.

He understood this principle, but he never found a suitable whetstone.

Even the hardest whetstone in the world, when you meet his right hand, you will be able to solve it. Even the magic weapons and flying swords in the green mountains cannot last for a moment.

It was not until that day on the sword peak that he and Zhao Layue talked about their senior brother's bone flute, thought of the flute song played by Emperor Dark before his death, and then thought of this demon bone.

Of course, if Emperor Xiao is willing to lend him the turtle shell for use, it may be the best whetstone.

The sound of talking suddenly came from outside the study room.

It was a young man and woman who seemed to be quarreling, and seemed to be crying, and then gradually became silent.

Jing Jiu ignored it and focused on sharpening his sword.

His right arm rubbed at high speed on the demon bone.

The bone meal gradually grows, accompanied by a faint burnt smell.

His expression remained unchanged. He stretched out his left hand to grab rootless water in the air, sprinkled it on his right arm and demon bones.

With a few hissing sounds, the sound of sharpening the sword became smaller, the bone powder was wet, and it no longer flew up, and gradually piled up on the table.

A sudden scream came from outside the window.

Jing Jiu had known that someone had been there for a long time and ignored it.

A girl stood by the window of the study, her eyes slightly red, obviously she had just cried.

She looked at the picture in the study, her face full of incredible expressions, and asked, "Are you grinding your hands? Oh... it's so disgusting."
Chapter completed!