This kind of modular cluster grenade, which can be freely combined, makes Luo Hao feel very satisfied. Luo Hao's satisfaction is not only for the good performance of this cluster grenade, but also for its weight.

After Luo Hao's own testing, two steel ball-type expansion modules were installed on the basic module and used in the best mode of "one for two", and the weight of a cluster grenade was only more than 500 grams, which was less than 100 grams heavier than the American-made M57 anti-personnel grenade!

If the manganese steel spike-type expansion module is connected to the base module, the weight is basically the same as that of the M57 anti-personnel grenade.

Although it weighs as much as the M57 grenade, it is more than twice as powerful as the M57 grenade!

Although the explosion effect of the manganese steel nail expansion module is more cruel and violent, Luo Hao feels that he will definitely not feel half guilty when he uses it. Anyway, I killed a "ghost", do I need to feel guilty about killing a "ghost"? Obviously not needed!

This time, codenamed "White Mouse", in response to the biological vaccine stored in the Chida Pharmaceutical Research Institute and the seizure of blood samples, except for Li Yifeng, who was in charge of peripheral fire support, all the members of Group B who entered the Chida Pharmaceutical Research Institute chose the HK416 automatic rifle as the main weapon, the mp7 submachine gun loaded with special steel core bullets as the secondary weapon, and the USP combat pistol as the self-defense weapon.

The purpose of unifying the weapons used is to facilitate the mutual ammunition support between team members during the battle.

In addition, each person also carries three cluster grenade base modules, six cluster grenade expansion modules, which can be combined into three sets of cluster grenades in the "one for two" optimal power mode.

While Tactical Group B was making the final preparations before the operation, Sun Yuan, who was coerced by Jiang Wei to retrieve the original samples of the smallpox type II virus and the virus culture notes for Takechu Takeka, and his commando team had also entered the territory of the Neon Country on a freighter.

Ibaraki Prefecture is a county seat in the middle of the main island of Honshu in the Neon Country. Before being brought into the "snake nest" by Jiang Wei, Takechu worked at a medical school in Ibaraki Prefecture, and Takechu's original job was to be a professor of virus biology at this medical school.

"Damn, this old pervert is not only a university professor, but also an honorary vice president of the medical school!"

In the suburbs of Ibaraki Prefecture, in the guest room of a small hotel that does not require identity registration, one of Sun Yuan's commandos threw the floor plan of the medical school research room provided by Takechu on the tatami mat in front of him with an unhappy face.

"Groundhog, how do you know that old thing is an old pervert?" Xue Xiao, the deputy captain of the commando team, teased: "You can't sneak into his small building at night to eavesdrop, right?" ”

"Eavesdropping? Damn, I'm going to eavesdrop on that old pervert's shit? What would my groundhog do such a tasteless thing? ”

The groundhog immediately jumped up from the tatami mat, glared and said, "Every time it is my turn to patrol, I pass in front of his small building, and the heart-rending cry of his maid bodyguard can be heard from afar!" ”

The commando firepower fist was heavy, picked up the few pieces of paper that the marmot was still on the tatami mat, flipped through it, and asked Sun Yuan angrily: "Tiger shark, do we really want to help that old man do this thing that violates heaven and earth?" If the old Piff's P virus is really fused, it will not be a joke, and I don't know how many people will die under this terrible virus! ”

The members of Sun Yuan's commando team were all members of the Longyin Army who were sent into the "Hydra" by Zhao Guobang in various ways and were expelled from the army, in order to cooperate with Sun Yuan in the "Hydra" at a critical moment.

Sun Yuan tapped his fingers on the tatami mat rhythmically a few times, and said in a deep voice: "My sister is very kind to me, so I must go and get back the original samples and culture notes of the virus!" ”

Hearing Sun Yuan's decision, the heavy punch suddenly became anxious, reached out and grabbed Sun Yuan's collar, and said fiercely: "Tiger shark, you can't forget your identity!" ”

"Punch hard, let go!"

The commando captain beetle, pulled away the hand that grabbed Sun Yuan's collar with a heavy fist, and after glaring at him, he said to Sun Yuan: "Tiger shark, what are you going to do?" Say it, the big guy is also prepared. ”

Sun Yuan straightened his collar and said, "I only said that I would go and get the virus and culture notes back, but I didn't say that I would bring these two things back to the 'snake nest'!" As long as I use these two things as a threat, my sister will be safe. ”

"Moreover, according to the news from the Dragon's Lair, the new tactical group B will carry out the 'Dark Dragon' training in the Neon Country, we will go to meet them after getting the virus and cultivation notes, and then find a way to save my sister!"

An hour later, Sun Yuan and twelve commandos went to the medical school in two rented odysseys.

Perhaps because the school has been closed, there are basically no other students on the campus of the medical school, except for guards patrolling with flashlights and rubber batons.

And this kind of patrol guard is useless for Sun Yuan and his commando team. After leaving four commandos to guard the perimeter, Sun Yuan led the other eight commandos into Takeaka's research room in the experimental building of the medical school.

Because Takechu was secretly researching the relationship between the cultivation of smallpox type II virus, the research room where he worked was on the ground floor of the experimental building.

After knocking out two guards patrolling the hallway, the beetle and the marmot retrieve the access card from them and swipe open the door to Takeo's laboratory.

In the laboratory, there is a pungent smell of formalin. The bottles and jars placed on the laboratory table, as well as various animal specimens, are very clearly presented in Sun Yuan's emerald green night vision device.

This laboratory was originally a warehouse for storing laboratory supplies in the laboratory building, and it came with a basement. Takechu used his position as honorary president of the medical school to transform this warehouse into a laboratory, and secretly researched and cultivated smallpox type II virus in the basement of the original warehouse.

On the door of the underground laboratory, after entering the code provided by Takechu Takechu, with the sound of the lock cylinder turning, the five-centimeter-thick alloy door that can resist the blasting of a certain amount of TNT explosives is opened.

Considering the things stored in this underground laboratory, Sun Yuan and his commando team all changed into chemical protective suits and put on gas masks before entering the laboratory.

The area of this underground laboratory is not large, that is, more than 20 and less than 30 square meters, but the test equipment inside is very complete.

The groundhog turned on the tactical flashlight on the M4A1 automatic rifle in his hand, looked at the organs soaked in the utensils around the laboratory, frowned and said, "It's good that I didn't eat much for dinner, otherwise I would have vomited." ”