C1015 Lighter by 2 Jin

"I've done a few experiments before, but none of them worked out too well."

Professor Cheng shook his head. His gaze was focused on Zhang Fei, causing Zhang Fei to retreat.

"What's the reason?" Wang Yi frowned. If the Extracted Liquid was not wrong, the capital had already been developed and applied to humans.

However, there was no progress at all, which made Wang Yi anxious.

After all