"Vrrrm!"
A rush of air rang out.
Xu Cheng piloted the giant mecha, slowly bringing it down onto the control platform.
The precision mechanical arms around it automatically locked into the vacant slots. The cockpit opened, and Xu Cheng leaped down from above, walking over to Elder Cheng.
"The drain on spiritual power... really is enormous. This is definitely more than an ordinary person could bear." Xu Cheng shook his dazed head and let out a long breath.
He had borrowed a sliver of Tian Meng's spiritual power just now, yet he had still struggled to keep going.
By his estimate, if he unleashed its full firepower, using weapons such as the mecha's [Soul-Powered Core Cannon] and [Superconducting Laser Beam], then even with Tian Meng's current assistance, he could only maintain normal operation for two or three hours.
Any longer, and even Tian Meng would be overdrawn.
If he relied on himself alone, ten minutes would probably be his limit.
"Not bad. You actually held out for an hour. Even a Soul Saint specializing purely in spiritual abilities would struggle to manage that..." Elder Cheng said with a beaming smile.
He was clearly extremely pleased with this disciple.
After all, he had only brought his disciple here to give him a pleasant surprise. As for actual combat, he had expected that to require another few rounds of optimization, probably several months later.
He had never imagined his disciple would be able to operate it on his very first try.
"It's a shame a Milk Bottle can't supply spiritual power..." Xu Cheng shook his head regretfully.
"What are you dreaming of?" Elder Cheng said helplessly. "It runs on both soul power and spiritual power. Being able to store soul power is already quite an achievement. Otherwise, only spiritual-type Soul Masters above