Han Du turned his body to look at the mouth of the tunnel, the aftermath of the explosion was still there, and there were rocks rolling down from the mountain, and inside the tunnel, the flames of the explosion gradually extinguished, and the sound of falling metal objects falling to the ground was faintly heard.

Judging by all the indications so far, the seven workers inside were killed in an explosion before, and now they are just returning to the final ending.

Han Du's body, as the mission was completed, all the scenes began to change drastically, those ghost cars disappeared, grass appeared on the field, the tunnel mouth became old, and the mottled feeling of the later years was restored, and everything was restored to its original appearance.

Even the big hammer that was brought out by Han Du changed automatically, Han Du originally thought that it would disappear out of thin air, but it was unexpectedly still in Han Du's hands, and the shape became a new metal hammer, similar to that kind of nail hammer, the front is divided into two parts, and the left part is round, which can be used to nail things; The right part is flat and slightly curved, and there is a round hole in it that can be used to pull something.

Such a new hammer was held in Han Du's hand and did not disappear, so Han Du didn't understand what it meant, because it was originally something that Han Du brought out from the mission scene, and it should have disappeared with the mission scene.

"Congratulations to the host, I am happy to mention the hidden exploration props, the invincible climbing hammer!" Just when Han Du wanted to ask the system what was going on, the system explained in time.

Han Du was slightly surprised with this so-called invincible mountaineering hammer, is this the hidden exploration prop that the system says?

"System, the sledgehammer I held casually happened to be a hidden exploration prop, how could it be so coincidental?"

"It's really a coincidence, in fact, in the mission scenario, if you want to successfully solve the difficulties faced by the workers, you can only do it by getting the sledgehammer, which is also due to the host's vision and ability to quickly find the key to solving the problem."

Han Du can be regarded as completely understood, the tasks released by the system actually have certain rules to follow, Han Du has performed several tasks, and slowly gained some experience, now thinking about it, he suddenly felt that he had touched some urine of the system all of a sudden.

However, the system is not stupid, and it may not be possible that it will constantly change its own task rules in the future.

"Is this my second expedition item? The name is a boom, how does it look similar to the hammer used by craftsmen? Han Du flipped the invincible mountaineering hammer in his hand, and he really couldn't tell where it was invincible.

However, if you are on a mission in the field, a mountaineering hammer is indispensable, but as far as Han Du knows, the mountaineering hammers currently on the market look much more powerful than his own, and some mountaineering hammers are even more powerful, integrating the functions of the Swiss Army knife on it, which can be called an artifact.

For his mountaineering hammer, Han Du has no extravagant expectations in other aspects, and only hopes that it can be passable in terms of quality. He saw a stone the size of a basin in the grass beside him, and he struck it with the flat and curved part of the hammer, with the right amount of force, and if the hammer was not of good quality, it should have knocked out a notch.

With a ding, the hammer hit it, and a few sparks appeared, and Han Du lifted the hammer up again, but to his surprise, the whole stone was lifted together.

How could this happen, Han Du looked down and took a closer look, and found that the flat and curved part of the original invincible mountaineering hammer was embedded in the stone, and he estimated that this part automatically became longer and was stuck in the stone.

This discovery made Han Du suddenly realize, it turns out that the main function of this hammer is its literal meaning, mountaineering, I'm afraid it's not just mountaineering, there is no problem with using it to climb steep mountain walls, with its characteristics of being stuck in rocks, it is safe for people to grab it and dance on the steep mountain wall.

This shows that his invincible trekking hammer is actually very different from ordinary trekking hammers, ordinary trekking hammers are mainly used as aids when mountaineering, such as knocking and pulling out something, and must not be used as the main tool for climbing mountains or mountain walls.

Han Du is overjoyed, it is worthy of the exploration props provided by the system, this is the real artifact!

He tried to put the invincible trekking hammer into the system page, and together with his thoughts, the hammer automatically released the stone, leaving a deep, regularly shaped square hole in it.

Now that the hammer had returned to normal and disappeared according to Han Du's thoughts, he immediately checked the system page in his mind and opened the data sheet.

Blue Sky Expedition

Status: Regrouping

Captain: Han Du

Age: 26 years old

Expedition team: leopards

Expedition Items: ☠ ┡

Expedition Achievements: ☽

Daily Quests: Updated

There are some new changes on it, and there is an extra ┡ pattern behind the exploration props, which represents the invincible mountaineering hammer, moving the idea to it, and popping up a line of small words: Invincible mountaineering hammer, allowing you to trek through mountains and rivers, fly eaves and walk walls, more than a little easier.

The old yellow skull pattern in front of it still has a thin layer of blood.

After the expedition achievement, the original four golden stars disappeared and were replaced by a bright crescent moon pattern, such as limited scene quests are not counted in the expedition achievement, which means that in the system's statistical rules, collecting four golden stars will upgrade to a bright crescent.

This upgrade law seems to be a little familiar, Han Du can't help but guess whether it is four ★ upgraded to one ☽, and four ☽ upgraded to one ☀?

He didn't know exactly what was going on, but he would know when he had accumulated enough expedition achievements, so his attention quickly shifted and he returned to the mouth of the tunnel.

He saw that the tunnel was completely back to normal, but there was still a bright light inside, and curiously, he re-entered the tunnel, walked to the bright light, and found that it was the light from his own bright flashlight.

It was placed on a stone beside the stone wall, as if it had never been used by anyone else, but Han Du looked up at the stone wall, and the eighteen holes arranged in sequence on it were clearly visible.

Picking up this strong flashlight, Han Du walked out of the abandoned tunnel step by step, and now he still has two limited scene tasks left to complete, card 3 and card 5, but these two tasks are not in a hurry to be executed.

Han Du took out these two black cards and looked at them, card 3 asked him to rescue a group of students with too little homework, the remarks on the back showed that this card would not expire until three months, and card 5 needed to go to the place where his parents first met and fell in love, and it was inconvenient to execute it for a while.

He began to move back, heading towards the opposite road, folding the two cards in his hand and putting them back in his shirt pocket.

When he stuffed the two cards into his pocket, he didn't notice that the remarks on the back of card 3 were suddenly automatically replaced, becoming: This card will expire after three days.