C1619 A War Broke out
The third hand was King of Spirits's secret weapon. It was also his trump card. No one knew about it. In other words, everyone who knew about it had turned into a corpse.
Now that King of Spirits had revealed his secret weapon, it was not because he wanted to, but because he had no other choice.
If he didn't do so, it would be very difficult to kill Xue Chen