Gu Yun pushed the iron puppet into the small courtyard where Chang Geng stayed, and Chang Geng tiredly followed behind.

The young boy’s conscience was still guilty with harboring inappropriate thoughts. Although he was able to maintain composure on his face, he only dared to sneak glances at Gu Yun whenever the man turned away. After a few peeks, Chang Geng found that Gu Yun was not wearing much on him.

In the early winter morning where one's breath could turn into frost, Gu Yun only had on a single robe that was neither old nor new. When slightly bending over to adjust the iron puppet, his waistline seemed to be a lot more slender than in Chang Geng’s imagination.

Soon, Chang Geng realized that he was looking at a place he mustn't look. He quickly turned his head away in a panic and asked: “Are you not going out today?”

Gu Yun: “No, I have the day off.”

Chang Geng was silent for a while, but unable to hold back, he asked: "How come you're dressing like this, isn't it very cold?"

"Don't copy Shen Yi and be lengthy, come here." Gu Yun beckoned him closer. He pulled the iron monster up again, then patted the hard material of its shoulders.

"This is a variant of the iron puppet. It is different from the ordinary ones used as house guards; it is also called the sword training puppet. Many martial arts practitioners in the capital had this as their very first training mentor. I also used it when I was younger.

“It has several sets of fixed martial arts moves for beginners. There are seven points on its body: head, neck, chest, abdomen, shoulders, arms and legs. If you can stab any of the first four, it will stop immediately. But you should be careful if you touch the last three. Even if you can hit the shoulder and arm points, its legs can still move and could kick you at any time.

"If you want to lock it down, any points from both its shoulders and legs must be hit. How about you give it a try?"

Gu Yun’s explanation was not even as long as a fart, finished in a few sentences. Right after that, he immediately entered the simple and crude on-hand practice session: "Hold your sword firmly!"

His sentence had not even finished, and the puppet already moved, its eyes flashing with bright purple, charging forward and lifting its sword.

Chang Geng was not in a ready state, he had not even pulled out his sword. He hastily took a few steps back.

The puppet did not give him any room to breathe. Once it started, it immediately began pursuing Chang Geng incessantly, already cornering him in the blink of an eye.