Wang Ming wasn't a fool. Since this was an escape collaboration, Ghost Head Blade had to do his part, otherwise Wang Ming would be the one to suffer a loss.
In the current situation, although Ghost Head Blade claimed that this was a last ditch attempt, Wang Ming believed that Ghost Head Blade wanted to survive more than he let on. Ghost Head Blade was desperate to get out of here, yet that didn't mean Wang Ming could use this to threaten him.
Wang Ming remembered Ghost Head Blade saying before that he had to find a host within a few days when he was in his blade form, otherwise his soul would be cursed by the ancient artifact spirit and he would be directly exterminated.
That was to say, Wang Ming had two days at most to figure out a way to get out of here, or given Ghost Head Blade's personality, he would definitely drag Wang Ming down to be buried with him.