The surface of the magical city is a steel forest, but the inner layer is an upside-down version of "The Classic of Mountains and Seas". Ye Chang'an, a poor young man from Taihang Mountain, took the college entrance examination with a coffin on his back. He stepped into the "extraordinary unified examination" and was forced to bind the "Mountain and Sea Check-in System" - check in a mountain and get the mountain god's shares; check in a sea and get the property rights of the sea; check in the goddess... The system alarms: It is forbidden to treat the goddess as a mountain!
