Best friends Yu Shang (a true daughter of a military and political family) and Nan Song (a daughter of a Suzhou embroidery family), who were doctors of traditional Chinese medicine in their previous lives, encountered an accident while collecting medicine in Changbai Mountain. They took 10 cubic meters of space (Yu Shang contained the spiritual spring, Nan Song contained the seeds) and traveled to the fictional Zhao Dynasty in the late Northern Song Dynasty. The spaces were connected later.
Yu Shang was originally the fourth princess of the Zhao Dynasty, but she was abandoned because of her "unknown twins". Her adoptive parents were killed by the Wang family who were looking for pearls for the third princess. She woke up after living in a brothel and transformed into a "Jin Se" and lurked. Because of the intersection of Liu Qinghe (who married Nan Song and Yu Shang as his concubine), they joined forces to kill the Liu family and have been bound since then.
During the Zhao Dynasty, there were internal and external troubles. Yu Shang disguised herself as a man and joined the army. In ten years, she controlled an army of 100,000 men and a private army of 50,000 women. Nan Song used three marriages to expand the Chu family business to connect the Central Plains with foreign ethnic groups, secretly research gunpowder, and organize a women's army. The two men collaborated with the military, government and business to quell the prince's civil strife and conquer foreign tribes. Yu Shang ascended the throne and founded the unified dynasty "Xia". He appointed Nan Song as the Minister of Household Affairs and promoted women's rights.
When the Xia Dynasty was in its prime, after the two men passed the throne, they brought 35 million merits with them and ended up traveling and practicing and pursuing the great path.
