The saber-wielding demon master was naturally Tang Zhen in disguise. The purpose of challenging the black fiend Demon Lord was to attract everyone's attention.
Otherwise, he wouldn't have been able to find a suitable reason to lure all these demons into the trap.
A single black evil demon Lord was not enough to satisfy his appetite, so he naturally had to destroy this guy's plan.
In fact, the saber in his hand was not enough to fight against a Demon Lord. If it were another demon master, they might have been killed by the black fiend Demon Lord.
However, if he did that, he would not be able to achieve the effect that Tang Zhen wanted. Therefore, he had to personally act out this scene and deliberately highlight the might of the battle saber.
If Tang Zhen really wanted to kill the black evil demon Lord, he wouldn't have to go through so much trouble. Perhaps the black evil demon Lord would have already been killed the moment the two sides fought.
