The power of the black gunpowder was too ordinary.
In order to blow up these roads, especially to blow through the three hundred meter tunnel, more than ten thousand Jin of gunpowder was used.
Even so, it still took thousands of people to dig for a few months.
This was a large iron mine, and the ground was too hard.
If Shen lang did not plan this half a year in advance, he would not have succeeded.
And this ten thousand Jin of gunpowder had almost completely exhausted the stock that had been stored for several months.
There was no other way. He did not have any saltpeter ores. He had to rely on the saltpeter scraped from the toilets. Who knew how much urine and feces had to produce this saltpeter?
Now, he had finally succeeded.
The reason why Uncle Black Tortoise and his four thousand men had disappeared was because they had sneaked away from this tunnel in the middle of the night.
