Xu Xiake Express

Xu Xiake Express, as its name suggests, is a super train that explores the unknown world. When it was built and by whom it was built is a mystery. It has fifteen carriages, which are almost not restricted by any physical laws. They are all invisible and can travel freely through countless worlds. … Zhou Zhan's ability to board this train was purely accidental. He later thought that maybe it was destined to happen. … It all started with that strange dream.