C1749 Upgrading the Chicken

"Too weak, too weak" The System's voice rang out, "I've been waiting for you for so long. What's the use of this tiny bit of energy? No other System can unlock it."

When Qin Guan heard the System's words, he immediately understood. Every time the System was unlocked, it would receive a new radiation. And now, he had come here. As expected, there was still some residual radiation