Completed[Farming infrastructure + cross-dressing + space + 1V1]
Ling Jin Sui transmigrated and became the daughter of a county magistrate. She didn't get to be a young lady for a day. Her father was executed, her mother and younger brother were banished to the borderlands, and she was about to be sold by her uncle.
After escaping by a clever scheme, she found her grandfather and cross-dressed as a man to go to the borderlands to save her mother.
She accidentally saved a handsome man, and when she was chased by assassins, she took the man's token to attract the enemy in order to protect her family.
She didn't expect that the man she saved was the deposed Crown Prince, and she could only impersonate the deposed Crown Prince to go to the borderlands, use her space to farm and build infrastructure, turn barren land into a land of fish and rice, and beat the invading foreign races into a panic.
Just as the deposed Crown Prince's fame spread throughout the world, the original owner came to find her...