The God Summoner is rubbish? I will summon Pangu!

Mo Lang traveled to a different world, where demons and monsters were rampant and awakened humans appeared.
Mo Lang awakens an SSS-level profession: God Summoner.
But the myths and legends of this world have long been broken, not to mention that summoning gods requires the blood of gods, making the god summoner the most useless 3S profession.
But when ten god-level demons appeared and swept away everything, humans were left defending the last Yanhuang City.
Mo Lang stood up.
"I splattered Xuanyuan with my blood, please welcome Emperor Xuanyuan!
I feed all the herbs with my blood, please invite Emperor Shennong!"
……
"I use my blood to turn Hechuan into a river, and invite Pangu the Great!"
The Ten Great Gods and Demons: Ahem, guys, I said we are just out here to take a shit, do you believe me?