"National Destiny of the Ming Dynasty Laboratory" system: The protagonist Zhu Youjian (a top student in modern history who traveled through time) is bound to a laboratory linked to the National Destiny of the Ming Dynasty. Whenever the protagonist improves the survival rate, food production or territorial integrity of the people of the Ming Dynasty, the system will unlock modern technology blueprints and rare seeds. Uniqueness: There is only one copy in the world. Restrictions and costs: The output of laboratory products requires the protagonist's "life essence" (shown as extreme exhaustion or temporary blindness), and if the national luck point drops, the system will randomly withdraw the unlocked technology, forcing the protagonist to continuously strengthen the country.
