C93 There's not enough technology

"How do I use this thing?" Wei Qitian asked.

"Do you see the ring underneath it? All you have to do is pull it down and throw it at the enemy. By the way, don't even think about opening the ring without 30,000 pounds of strength."

"Then wouldn't it be easy to open it, and such a dangerous thing could be easily activated? Will that really be a problem?"

Lu Ya was dumbstruck