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How could the Great Tang Kingdom possibly be absent from the arms race?
In fact, the Great Tang Kingdom's arms race had never stopped since the beginning, and Tang Mo had always been finding ways to update the weapons and equipment of the Tang military, never resting for a moment.
The Tang Navy was not intimidated by the crazy expansion plans of other countries' navies; it even crazily joined the arms race.
According to the plan, the Tang Navy would be equipped with more than 20 submarines before the next war arrived, to cut off the enemy countries' supply lines and deal heavy blows to their main fleets.
There's no need to elaborate on the combat power of these submarines, since the enemy would be completely unaware of their existence, thus having no guard against them whatsoever.