Lua Moonsilver was in a stand-off with the martial artist. Despite his anger, he still had some semblance of rational thought, meaning that he was very aware that his opponent was dangerous. So, in his attempt to prepare for the fight, he did not make the first move. Instead, he watched carefully from the sides, and waited for him to do something.
Chen was also wary of Lua. After all, he was with his bare hands, while his opponent was burning like a candle. He knew that he needed something that'd let him do damage without burning himself in the process, but he could also do without. His hands were very famously resilient.
Slowly running out of patience, much like the candle that he was right now, he decided that it was nigh time to strike. He leapt with intense force, cracking the ground underneath him. However, Chen dodged this obvious attack, and Lua crashed into a different factory from across the street. Thankfully, it was night, and no employees were harmed.