The brilliant idea

Li Ling raised the hammer and without even bothering to think about it for a second, he struck the door, hoping to see at least a crack but it seemed that the glass door was a bit too strong. 

Zhihao sighed as he saw the fruitless try and wondered if there was any other way that could perhaps help them. 

Li Ling frowned as he raised the hammer for the second time and struck down, hitting the same spot once again. 

Zhihao blinked as he understood what Li Ling was trying to do. 

No matter how powerful the glass used was, it was still nothing more than glass. It would have to eventually break if Li Ling kept hitting it. 

Even though there was no crack, Li Ling wasn't discouraged in the slightest as he lifted the hammer and hit the door once again. 

Zhihao took this time to turn and walked towards Kaoru as he questioned, "Anything useful?"