Warhammer: Ember of Horus

Warhammer 40K world, the bottom layer of the hive city. On a planet with 30 billion people, 90% live below 17 kilometers. Workers could be cleared as rations, and nobles lived in artificial sunlight above the domes, never looking down. Pan Yao was a museum administrator before traveling through time. After traveling through time, the embers of a fragment of Horus were embedded in his palm. He doesn't have a system panel. There is no starting primarch. There is no explosive troop plug-in. He just squatted down in the ruins and saw an old worker who was dying, a little girl holding an empty gun, an underground doctor who did not accept payment, and a mine stone wall with names engraved on it. From one person to 30 billion people. From "can see" to "I am the light". The empire decayed for ten thousand years. Chaos crouched in the Warp waiting to reap the scraps. Everyone is saying that there is no third way for mankind. Pan Yao didn't answer. He checked the gun and stood up.