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The protagonist is a reincarnated person who was reincarnated into this world under unknown circumstances. In this world, the country where the protagonist is located is a feudal country. The power system used is similar to that of cultivating immortals, but it is a kind of power and physique that cannot be advanced and relies entirely on talent. Among them, many countries have their own unique power systems and systems. The system is mainly determined by the national conditions of the country. This is a world where the development of national power systems is the main development trend. Therefore, most countries are backward agricultural countries. Only a few countries have completed industrial advancement, but they have not developed well, except for countries with scientific and technological power systems as the main body.