Chapter 7: In distress

　　 Although the underwater visibility is not high, the topography is complex and water plants are everywhere, fish hiding here are difficult to be found by predators, but in the micro-recognition of the data field of view, the group of spiked devil fish still can't hide.
　　 Lines of data, marked in the field of view, after removing the useless information such as sea temperature, brightness, sea water velocity.
　　 In the data field, not only the position of each devil fish is marked, but their outline is projected on the retina.
　　 Without rushing to alarm these big fishes, Ivan quietly returned to the surface. Slowly tread the water under your feet, adjust the position of the raft gently, and move to the center of the devil fish school.
Taking a breath, he slammed four or five big rocks on the raft into the sea, then quickly took out a long and thick iron sheet and an iron rod from the backpack, and Ivan followed the rocks to slide back in. In the water.
　　Underwater.
　　 At the moment I entered the water, he held the iron piece in one hand and the iron rod in the other, and knocked them together with all his strength. The falling speed of rocks in the water is much slower than in the air, while the propagation speed of sound waves in the water is much faster than in the air.
　　 "Ding Dong, Ding Dong, Ding Dong..."
　　 Almost at the same time, a huge noise and rocks fell on the heads of this group of devil fish.
　　 was shocked by the sudden "attack", coincidentally, the spikes behind a group of cowardly devil fish's tails turned red instantly, and they shot high and violently.
　　 After the fins stirred the ocean current and stirred up a large piece of sand on the seabed, the school of devil fish instantly disappeared without a trace.
　　 Ivan floated on the surface of the sea, and then dived into the bottom of the sea again after the sand and dust had completely settled, and found three or four red spikes lying quietly on the bottom of the sea. As for the others, I don't know where they were launched.
　　 It's done!
　　 Aiwen was overjoyed. Originally, he was just thinking of giving it a try, but he didn't expect this clumsy strategy to really fool them.
　　 Immediately, he harvested two long and two short four red spikes without any accident.
　　As an auxiliary material for the preparation of medicaments, although the amount of this kind of spikes is small, it is irreplaceable. With these gains now, there will be no need to consider the issue of shortages in the next few years.
　　 "Anyway, I went out to the sea, so by the way, I collected the other materials needed for the Black Sea Pharmacy. Basically, the raw materials for the Black Sea Pharmacy can be found in the Black Sea waters. I hope I can still gain something today.

　　 Since there is no shop in the morning, Ivan decided to spend it here today. Strive to find all the medicine formulas that are so weird that they are almost impossible to buy in pharmacies.
　　 So Aiwen began to repeat the process of diving-watching-returning-changing places-diving again. I have to say that Leopold’s sea area is rich in biological resources. By the afternoon, the six-pointed blue starfish, three unique seaweeds, and black thread sea urchins were all found.
　　 And the last remaining main material is...shark teeth.
　　 Ivan didn’t see it this time, um, I don’t want to see it in the sea anyway, especially when I’m alone on a raft...
　　 Because in Leopold, sharks are caught by fishing boats from time to time, just go to the pier and wait. Even if there is no fresh one, you can find it in a nearby place where the fish is processed and discarded, but the effect is only marginal.
　　 The collection task is almost complete.
It’s just beyond Aiwen’s expectation that there were a lot of "surprise joys" in the process of collecting raw materials, such as beautiful shells, rusty copper keys from unknown sources, and a small fiery red coral and even a picture. I have harvested a few pearls that are not very good.
　　 Although it is not worth much, it gives him a different kind of satisfaction. In his interest, Ivan has already turned the journey of picking herbs into a journey of treasure hunting.
　　 kept searching, unknowingly, Ivan had already moved away from the first piece of water, and the color of the sea also darkened.
　　 "Huh!"
　　 Drilled out of the water without gain, and glanced at the slanted sun. Ivan decided to dive for the last time, returning directly regardless of whether he had gained or not.
　　 The exercise of the knight breathing method all the year, makes Ivan hold his breath under water much longer than ordinary people, and the diving depth is much deeper. Allow him to go to places that ordinary fishermen cannot reach.
　　 Deliberately testing his limits, holding a rock, Ivan walked down the ever-extending seabed. Until the field of view is gradually limited, only when the data field of view can barely see the object is stopped.
　　 Extraordinary power can't make Ivan stay at the bottom for a long time, so hurry up and search for possible "treasures".
　　 Looking around, even though it is difficult to see the sun here, in addition to the reefs and gravel on the sea floor, there are still marine fish and crustaceans of various colors and shapes roaming among the reefs. The transcendental world obviously creates a stubborn life that matches it.
"what is that?"
　　 Soon, under the guidance of the digitized field of vision, Irwin found a shell in the cracks of the reef, a shell larger than a pumpkin.
　　 The shell is covered with various parasites, and it is almost integrated with the reef next to it. Without the help of a digital vision, Ivan would not be able to find it even if he passed by.
　　 took the dagger tied to his calf in his hand, inserted it through the gap in the shell, and pried it hard. A soft pearly light flowed out, one, two, three... a large, two small, a total of three large black pearls were picked out by the dagger.
　　Although Ivan is not well-versed in jewelry of this era, he still has basic common sense. Even according to the lowest expected estimate, these three excellent black pearls are worth at least one hundred golden lions.
　　 According to the prices of this period, a six-year-old military horse at its peak is worth only a hundred golden lions. For a knight, a strong military horse has more face than having a mid-to-high-end sedan in his previous life.
　　 Taking the income of ordinary people as an example, an aristocratic attendant, who is considered a high-income group, usually pays three silver bulls for a month and can be converted into a golden lion.
　　 One can imagine what a fortune this is.
　　 Retaining the joy in his heart, Ivan carefully put the harvest into the small waist pocket, throwing away the stone, and then resurfaced.
　　Some forgetful Aiwen apparently forgot that he was on the bottom of the perilous sea, not a good-service jewelry store.
　　'S upward momentum was stopped by a tight ankle suddenly.
　　 Aiwen thought he was entangled in seaweed, but he struggled hard but didn't break free, and he shook his heart.
　　 Gulu, Gulu...
　　 Aiwen looked back, almost venting his breath in amazement.
　　 A huge octopus with a body color like a reddish-brown reef has lurked by Irving’s side at some unknown time, and it is a thick arm and foot that is more than three meters long that is wrapped around his ankle.
　　 Sudden changes, Aiwen did not struggle like ordinary people in vain. The training he received from childhood told him that if he faced an enemy stronger than himself, if he panicked before fighting, the ending would be doomed. This is true when facing the ferocious bobcat, and today is the same when facing the big octopus.
　　 The big octopus is obviously impatient. After entangled the prey, the other arms and legs cling to the reef, slowly dragging Aiwen down, as if to drag him into the deep sea and immediately enjoy a big meal after drowning.
　　 At a critical moment, the ways to get out came out of my mind and were quickly rejected.
　　 But no matter how fast the thoughts are in his mind, it will not be as fast as a trainee knight who has formed a combat instinct. Driven by the powerful survival instinct of UU reading www.uukanshu.com, Ivan did not resist the drag of the big octopus, but instead used this force to kick the reef and recoil downward.
　　Because he knew that he couldn't get past this cunning predator on the bottom of the sea, the only way to survive is to kill it! It's just a huge ordinary marine creature, and it's not a ferocious animal. It's not certain who will die.
　　 Although the big octopus is very smart, he can't guess what Ivan is thinking. When he sees him swimming over, the remaining tentacles are all opened, waiting for the prey to be delivered to his mouth, and then feasting on it.
　　 With the help of recoil, Ivan, who was very close to the big octopus, had already seen the terrible beak-like mouthparts in its tentacles. He didn't dare to hesitate anymore, his strong and powerful legs swung hard, and his body accelerated again.
　　 Before the big octopus's open tentacles could react, Ivan had already attached it to its forehead, and looked at each other at close range with the yellow eyes of two fists.
　　 The suction cups on the arms and feet and the pigment patches under the skin are clearly visible.
　　 grinned, the dagger in Aiwen's hand had been sent between the eyes of the big octopus without hesitation, and it was also the location of its nerve center.
　　嘤
　　 Regardless of the big octopus dying behind him, constantly waving its tentacles, Ivan rushed towards the water. If he waited another half a minute, he didn't need the big octopus to eat him, he would have to drown on the bottom of the sea.
　　 rushed out of the water and climbed onto the raft. Ivan did not forget to pack all of his harvest carefully, picking up the oars and fleeing, and rowed towards the beach.
　　 The ocean is too dangerous for me now, and it is almost fatal to leave the shallow beach a little bit. But Aiwen firmly believes that one day he can conquer this vast black sea and even explore the more magnificent and fantastic scenery in the distance!