Wuchang Xinkong naturally didn't want to charge into the Ghost Den. After all, the rules of survival in the netherworld were ten times or a hundred times those in Kunlun's Field. The dead souls had to devour each other to keep getting stronger.
Once she charged into the Ghost Den, she could very possibly die. However, the netherworld was too vast. Even a Wuchang wasn't clear about the dangers in every place. Thus, her fear was understandable.
It took half a month after that. After experiencing many bloody battles and passing through six Ghost King territories, they finally arrived to the border of Ghost King Shenchu's territory.
After this half month, Zhang Ruochen, Captain Rat, Mu Lingxi, and Han Xue were all exhausted. They'd suffered many attacks. Once, they'd almost all died in a canyon. Thankfully, Zhang Ruochen cast the Universal Spiritual Map at the most critical moment and put everyone in the scroll world.