Hearing Liu Zheng's words, everyone in the group smiled bitterly.
"Sir, this fire attack is not that easy..."
Xiao Qi even sighed: "This method is useful against the navy whose shipbuilding is not very developed. But it is of little use against the Jingzhou navy."
"oh?"
Liu Zheng frowned.
Jiang Xuan smiled bitterly: "Sir, because the wood used in this Jingzhou ship is processed by Nanyang people, it is extremely difficult to burn. For many years, the fire attack has been completely useless when encountering the Jingzhou ship!"
Liu Zheng was stunned.
This actually startled him.
Fire-resistant wood?
In this era, there is already flame-retardant wood? What is flame-retardant wood? It refers to wood with added flame retardants. Physical or chemical methods are used to improve the fire resistance of the wood. The characteristic of this kind of wood is that it is difficult to
combustion.
In Liu Zheng's impression, even ancient people occasionally developed simple flame retardants.
However, it was not until around the 17th and 18th centuries that effective flame retardants and treatments truly emerged.
and.
It was not until the 19th century, or even the 20th century, that the flame retardant industry gradually formed.
certainly.
This does not mean that there may be another time traveler in this world...
In ancient times, all kinds of magical things were actually endless. And... Nanyang? Thinking of this, Liu Zheng felt relieved. Nanyang has been filled with wizards since ancient times. These wizards accidentally invented flame retardants.
, it is not impossible.
And, that way, it also produces a variety of plants!
This resin flame retardant was very popular in later generations.
"Is this still happening?"
Liu Zheng smiled bitterly.
He also said that it was abnormal for these people to discuss such a simple method as fire attack for a long time without bringing it up.
a group of people.
Once again, I was at a loss.
Suddenly, Liu Zheng's eyes lit up and he patted the table: "Yes!"