Naturally, I have never seen anything made by mortals in the human world.

So I don't recognize this as a submarine.

It is a diving tool that can safely reach the bottom of the sea.

Shura just briefly introduced the two of them.

It was built by his men.

The whole body is made of a super metal unique to the Sifang Continent back then.

......

Chapter 725 of "Master Descending the Mountain: Senior Sister, I'm Coming" is done! I am hitting it in my hand, please wait a moment,

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