Three Kingdoms: Lingling Prefect Under Guan Yu at the Beginning

Thousands of years ago, Liu Bang secretly visited Chencang, used the Jialing River waterway to transport grain, crossed the Qinling Mountains, and finally established the world with Bashu as the base. A hundred years later, the Shu Han, who also occupied Yizhou and Hanzhong, were trapped in a natural chasm. A landslide caused by an earthquake completely blocked the Jialing River's food transport waterway, and the journey north to the Qinling Mountains became a torment of blood and tears every step of the way. Six out of Qishan, a total of 680,000 Shu soldiers walked on the ice and drank snow, but only 50,000 Cao Wei souls were obtained - one Wei soldier took 13 Shu soldiers to shake it. When the old road is cut off and powerful enemies are blocking the way, which way should this regime rooted in Bashu choose to go north in order to break away from the shackles of history and complete the unfinished cause of unification?