After explaining the characteristics of yellow phosphorus, Ning Zhiheng continued to carefully instruct, "This bag of yellow phosphorus has been sealed with plastic sheeting, isolating it from the outside air. Moreover, it is winter now, and the temperature is very low, so it is not enough to spontaneously combust. It is safe for the time being."
After you bring it home, try to place it near a window or on an outdoor balcony, where the outside air temperature is low, ensuring its safety.
Before leaving tomorrow, use a dagger to cut open the cloth in the low temperature. Be very careful not to let any part of your body touch the yellow phosphorus. Then wrap it with cotton cloth soaked in kerosene. Remember to wrap it with two layers of cotton cloth to keep it airtight. Then put it in this small suitcase.
This leather case has excellent sealing properties, which can control the kerosene smell from escaping, but it cannot completely isolate the air, so it does not affect the combustion of yellow phosphorus.
Once at the airport, find an opportunity to place the suitcase on the plane Fu Shengyuan is traveling on. Emphasis should be placed on Fu Shengyuan as the primary target; whatever airline he flies on, that's the one on board.
At this point, Ning Zhiheng took out a sketch, which was a diagram of the aircraft's internal structure that he had drawn in advance. Pointing to one point, he said, "The structures of Japanese aircraft are all roughly the same. This position in the cabin is closest to the engine. When the aircraft is running, the temperature here will be the highest. If it is a passenger plane, there should also be a baggage compartment. If you put your suitcase in the compartment, after the aircraft has been in operation for a while, the temperature in this compartment will definitely reach the auto-ignition point of yellow phosphorus."
Xu Yongchang asked in confusion, "The combustion temperature is high enough, but how do you let it come into contact with air? It won't burn without air, will it?"
Ning Zhiheng couldn't help but smile smugly. This next step was something he had racked his brains to design.
He pointed to the two bottles of kerosene and said, "This is the purpose of this kerosene. Yellow phosphorus is immiscible with water, but it can slightly mix with kerosene. In other words, if you wrap yellow phosphorus in cotton cloth soaked in water, you can completely isolate it from the air. However, if you use cotton cloth soaked in kerosene, it can only temporarily isolate the air. Over time, the yellow phosphorus inside will gradually mix with the kerosene and slowly seep through the kerosene to the surface of the cotton cloth, thus coming into contact with the outside air."
I've tested this time. Wrap it in two layers of cotton cloth soaked in kerosene. It takes about an hour for the yellow phosphorus to dissolve in the kerosene, and about an hour and twenty minutes for it to seep out onto the surface of the cotton cloth.
The temperature for spontaneous combustion is reached, and oxygen in the air is also present, causing it to ignite spontaneously. The amount of yellow phosphorus in the sample is sufficient; once ignited, the released heat can quickly ignite the solid wood and leather inside the aircraft's shell. Furthermore, because it is insoluble in water, even water cannot extinguish the fire, and the fire may even intensify. Given the confined space inside the aircraft, those on board are essentially doomed; a crash and loss of life are certain, with extremely low chances of survival!
At that time, Japanese aircraft were all aluminum-clad, meaning the outermost layer was aluminum, while the inside was made of leather and solid wood. If an extremely hot flame were to start burning from the inside, the aircraft would quickly be burned down to just the outer shell, and eventually even the outer shell would be lost.
Ning Zhiheng painstakingly designed this procedure, believing that as long as nothing unexpected happened during the trip, Li Zhiqun and the others would have no chance of escaping death.
After listening, Xu Yongchang carefully digested every step Ning Zhiheng instructed him to take, especially the points that required caution. Knowing that Xu Yongchang had little knowledge of chemistry, Ning Zhiheng explained the instructions twice more, and only ended the explanation after confirming that Xu Yongchang understood.
Ning Zhiheng concluded by saying, "Remember, if anything unexpected happens during the operation, such as a security check, being unable to board, or even a delayed boarding, do not hesitate to abandon the operation immediately. Find an opportunity to discard this suitcase. Your personal safety is the top priority. Do not force the operation to continue. Do you understand?"
Ning Zhiheng had high expectations for Xu Yongchang. Besides the fact that Xu Yongchang's value would become increasingly important in the future, he was also unwilling to risk the lives of his subordinates. This was a bottom line that was difficult for him to cross. Since he came into this world, he had never given up on any of his relatives, friends, or comrades-in-arms!
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