I Want to Cultivate the Immortality System and I Want to Climb the Technology Tree

Mission 1: Accelerate the development of the world and reach a world population of 3 billion (mission time is 10 years). Task 2: Lead or guide Xia's social system into rapid modernization (task time: 5 years). Task 3: Increase the happiness of Xia Kingdom residents by 6% (reach 80% within 15 years of the task time). The above tasks are long-term main tasks. (Mission failed and erased) The martial arts merchant is confused. I am a cultivator of immortality. My ideal is to pick up girls, sleep, and cultivate immortality. So the protagonist, a martial arts merchant, started a legendary life in three worlds: ancient times, modern times, and the end of the world. He traded various materials and technologies, and finally took the three worlds into the starry sea.