Tianyu Tower

This world has a column connected to the sky, which people call the Sky Tower. There is a door inside the Tianyu Tower. That door allows people to go to different worlds. It is called the alien door. Originally, Jiang Hanxu had not thought about going on an adventure to a foreign land. Since all his friends wanted to go on an adventure to a foreign land, Jiang Hanxu, who wanted to experience a different experience with his friends, started a journey to a foreign land.