The two fought and retreated, but fortunately, after the bat boss was hit by ten fireballs, he did not pursue the two anymore, but returned to the place where it was hanging before to rest.

It seems that it should lose the will to fight after its HP drops to a certain value, and it needs to go back to rest.

Jin Ke and Zhang Mengdi also hurried back to the ground, replenished their energy, found some food to eat, and then went down to continue the battle.

When Zhang Mengdi was fighting, Jin Ke explored around the hall where the bat boss was located, and found a locked door, and it was banned from energy, and only a specific key could be opened.

It looks like if you want to continue the level, you have to kill this bat boss and get the key from it.

Two hours later.

Jin Ke felt very wrong.

This is really wrong.

The HP of ordinary bats is not high, and the HP of this bat boss is not very high.

Judging from the 50,000 points of damage that burst out above its head, its base defense is very low, and Zhang Mengdi's fireball technique eats all 50,000 points of damage.

Even if it has 5 million HP like the giant rhino, 100 fireballs can finish it because of the damage all.

But it has eaten Zhang Mengdi's fireball bombardment hundreds of times, and there is nothing at all.

It's not scientific.

Jin Ke quickly came to a conclusion after careful study.

That's where the bat boss hangs is problematic.

Just like the spring water in the tour, the Bat Boss can quickly refill its HP after hanging there, so no matter how many fireballs Zhang Mengdi throws past, it can restore its HP to full value when the two of them go back to replenish their energy.

Jin Ke asked Zhang Mengdi to bombard the bat suspension with a fireball, but it had no effect.

If you look closely, you will see that there is a black mist looming in the place where the bat boss is hanging, and it feels like a small space-time rift, and some kind of energy escaping from the space-time crack can heal the bat boss.

If it goes on like this, it will be useless for him and Zhang Mengdi to be busy for a long time.

That's definitely not going to work.

After returning to the courtyard again, Jin Ke went to the pharmacy.

All flasks displayed here are black and round to look like grenades.

The cheapest potion is 10 gold coins, and the more expensive ones are 20 gold coins, 50 gold coins, and 100 gold coins.

There are no more expensive ones.

However, the cheapest one sells for only 1 gold coin.

Sell for only 1 gold coin...... It's an empty bottle.

A transparent round crystal bottle with a lid.

"Empty bottles are sold for 1 gold coin, and I'm also drunk!" Jin Ke was powerless to complain.

The rest of the potions were all jet-black, and they were supposed to be round, empty flasks filled with black potions.

All the potions are black, which goes well with the style of these shops.

Black shop.

There was a bottle of potion that caught Jin Ke's attention.

The name of this bottle of potion is 'Sealing Spirit'.

"Pulse Sealer: Seal the target's bloodline, so they can't regenerate."

"Duration: 60 seconds."

"How to use: Throw it at the target, bring its own power, and automatically lock on to the target within 20 meters for jet attack."

"Hand-thrown auto-homing short-range missiles? The things that Nightmare Castle sells are really different. Jin Ke complained a few words.

Jin Ke pondered that when the bat boss flew back to the top of the cave to hang, as long as he threw a bottle on it, it would not be able to recover blood, and at this time, Zhang Mengdi would follow up and throw a few fireballs, and it should be able to get it done.

The problem is, 10 gold coins!

Is there any mistake? So far, Jin Ke has collected less than two gold coins, and 10 gold coins are going to kill monsters until what year and month?

Even if the energy core could sell for one more gold coin, it would be far less than 10 gold coins.

But in this situation, if you don't get this pulse spirit, it feels like there is no way to get the bat boss.

If you want to get the Sealing Spirit, you have to go outside to play gold coins first.

The fierce rhinos outside don't know when they will be resurrected, and there are many pythons, killing them can collect a lot of fierce rhino meat and python meat, and they can be exchanged for copper coins in different quantities when they are taken to food stores.

It's going to be a long process!

Jin Ke thought of a way to get gold coins quickly.

But he hesitated.

Here's how it works...... The black bow and arrow in his hand was worth ten gold coins and could be recovered at the weapon shop for 2.5 gold coins.

The entire set of black armor on his body is worth thirty gold coins, which can be recovered at the armor shop for 7.5 gold coins.

In this way, he had exactly ten gold coins, and he could buy a bottle of Sealing Spirit.

With the Pulse Sealing Spirit, it is possible for Zhang Mengdi to kill the bat boss, get the key from the bat boss's corpse, and there should be a fragment of a round carving.

The strategy of Nightmare Castle should be able to continue.

I'm afraid...... In case he bought a bottle of Pulse Sealing Spirit, but still didn't get the bat boss, Jin Ke would want to cry without tears at that time.

Do you want to sell the black bow and armor for the sealing vein spirit?

It was a really difficult decision.

Jin Ke came to the weapon shop and put the black bow and arrow on the round table, wanting to see what price the shopkeeper would recycle.

He just tried, and didn't decide to sell the black bow and arrow.

The shopkeeper reached under the table and fished it out...... It was pitch black below him, and he couldn't see anything, but he fished out a few gold coins and put them on the table, and pushed the table around this way.

There are actually five gold coins?

Black-hearted shopkeepers also have miscalculations? Isn't it a quarter of the price recovered?

It didn't take long for Jin Ke to understand what was going on.

Instead of taking the gold coins, Jin Ke turned the round table back.

Although the shopkeeper here is inhumane, does not speak, and does not bargain, as long as Jin Ke does not take the gold coins, they will not take his goods privately, which is very reassuring.

Jin Ke took out the chip that increased critical strike chance from the slot of the black bow and arrow, and placed it on the round table alone.

Sure enough, the shopkeeper fished out two gold coins and 50 silver coins from under the round table and placed them on the table, then pushed the table around.

One chip is worth 2.5 gold coins!

And the owner of the weapons shop buys these chips!

Jin Ke remembered that there were three chips in this set of armor on his body!

Although these chips are also very important, and even more difficult to get hold of than equipment, but in this situation, Jin Ke wants to continue to attack the Nightmare Castle, so he can only endure the pain.

I can't bear the child's wolf!

What does it mean to be reluctant to let a child trap a wolf? This must not have been said by someone who has been a parent, who threw the child out for the sake of a wolf?

It's shoes, right?

But now Jin Ke does have the feeling of giving up the child to set up a wolf in his heart.

Four chips worth a total of 40 gold coins! It was recycled by these black-hearted merchants for a quarter of the price! Lose thirty gold coins for nothing!