A lot
"FUCK! HOW COULD I FORGET ABOUT HIM?!"
Hao Xuan just now remembered a very time-sensitive matter that he had completely forgotten about. That was one thing that could not wait any longer so he quickly made Grey change destinations.
"Go to the dark mountain at the back of the city instead!"
"Neigh!" both of Grey's heads bobbed up and down as he increased his speed yet again, tearing through the dark forest in a whirlwind.
But as much as Hao Xuan wanted to think everything would be fine, something deep inside him was saying otherwise. There was a hole forming in the pit of his stomach.
The two-hour return journey was cut to less than seven minutes with Grey's speed and soon Hao Xuan could see the dark mountain in the distance.
"It's fine, I'm not too late," he told himself again, "I can even ask Ashura of the Six Paths to tell me how to get to the river Styx. He has been locked in the underworld for ages, a few more hours is nothing. It will all be-"