Running Lord Metal

"Qiong, what is that gate?" Lu Feng asked Hou Qiong who was beside him. 

Hou Qiong looked at the gate. "What's wrong?" she felt nothing wrong there. 

"That gate is undamaged!" 

"Oh, I heard that gate was made of some special material, it was made very long ago," she said to him. 

Lu Feng walked to the gate. Special material? What was that? He came in front of the giant gate. 

"This sure is huge" Lu Feng said and placed his palm on the surface of it and he could sense his Qi in it. 

"I will take the Qi back," Lu Feng thought, there was no need for this gate and he didn't see anything special about this gate other than his Qi. And he thought that was the reason it was still able to hang in there because of his Qi. 

Hou Qiong looked at Lu Feng and didn't understand his actions. What was he doing with that gate?