Suddenly, the azure shield expanded from the center of the disk to all directions, penetrating out of the workshop and going outside.

Chu Tian followed out first

From a visual inspection, a hemispherical area about a hundred meters in diameter is shrouded in it.

Durex also came out to see such a beautiful scene

"It seems that it can no longer be used as city defense."

No wonder the area of ​​effect is too small, even if it is used on the city wall, two need to be placed, and it seems too wasteful.

Only then did Yi Ni follow her. She was amazed by the effect of the items she had made. She opened her mouth slightly and raised her head to look up in surprise.

"Yi Ni, show me the attributes and take a look."

"Ah? Oh!"

I hurriedly projected the attribute diagram into a slideshow

…

A medium-sized magic shield generating device. When the special protective device is turned on, a spherical magic shield with an energy value of 20,000 will be generated. Before the energy is exhausted, all objects in the shield will be invincible.

Automatically restores 500 energy per second, has a range of 100 yards in diameter...

"20000? What is the concept?"

Durex thought about it and said: "Probably being hit by a dragon roar fire cannon."

"No, it's the five attacks of the three-gun trebuchet," Yi Ni suddenly retorted.

"Experts have the final say." In fact, Durex is not entirely sure either.

Chu Tian wasn't sure what Yan Ni meant. She should be calculating the 7,000 siege damage of the Dragon Roar Artillery based on the protection value of the city wall. According to her statement, it was true.

The suggestion is: "Find a door and just use it to see clearly."

Both Durex and Yiyi's eyes lit up. This is the place where dragon roar artillery is made. It's full of iron lumps.

After a while, Yi Ni asked two NPCs to push a newly completed Mad Dragon Iron Cannon over.

"This is an improved type. It not only has a range of 100 meters longer, but also has a damage of up to 9,000."

"This is good, we just want to try it together." Chu Tian also smiled.

Experiments have proven that it takes 7 blasts from the Mad Dragon Iron Cannon to break the magic shield!

Yi Ni quickly calculated: "It is estimated that 1 point of energy can offset 3 points of siege damage, which means that 20,000 energy values ​​can offset about 60,000 damage!" She was shocked by this data.
Chapter completed!