Summoning: Starting from the Empress

When Liu Feng woke up, it was already three hundred years later. At this time, spiritual energy is revived and everyone respects strength. And Liu Feng, as a peerless genius with a summoning system. Where to go? Ding, congratulations to the host for successfully summoning his subordinate Wu Zetian! What, the system can only be used for summons, there is no system store. Then how can I become stronger? It's okay, who would do it himself when he has his subordinates? Only Chuunibyou would think about fighting on his own, and smart protagonists would raise younger brothers to fight. Well, I have to think about it, who should I call today? … This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.