MTL - The Rebirth of the Financial Hegemon - ~ please explain

The world is big, but I am the only one who is orthodox.Sweeping the world's immortal sects with the power of the Celestial Dynasty.A strong man who practiced the 'Way of the Emperor' came to a world full of immortal sects, and a secular dynasty that was despised by the practitioners gradually came to be on an equal footing with all the top immortal sects.The law of the dynasty is that everything in the world is the king's land, and the shores of the land are the king's ministers! There is only one orthodoxy in the world, and all immortal sects are illegal organizations!

An apocalypse for everyone, surviving in the ocean.Extreme weather, Extraordinary Sea Beasts, cunning and deceptive pirates, natives with ulterior motives... Danger lurks everywhere.Upon waking up, Chen Qing found herself suddenly in an ocean survival game, and she had awakened her unique Extraordinary Ability—Everything Can Be Upgraded!Everything Can Be Upgraded combined with the Mechanic profession, what kind of sparks will it ignite?The strongest Mechanic on the sea, Chen Qing's journey begins with a Mechanic's introductory guide!Mechanic Chen Qing, one person! Is equivalent to one nation!!

Forty years ago, Gu Hai, transmigrated to a brand new world where the cultivation was no longer fiction but a reality. These are the tales of Gu Hai’s life since his arrival at the Chen Kingdom as he becomes the biggest merchant of six kingdoms.

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Zhou Xiaochuan became the emperor of the subjugated country and obtained the sign-in system.

As long as you sign in every day, you can get random rewards.

“Sign in successfully, congratulations on getting the Summoning Card.”

“Sign-in is successful, congratulations on getting the seeds of dynasty luck.”

“Sign in successfully, congratulations on getting 100,000 Heavenly Soldiers…”

 …

From now on, the gods and demons of all realms will accompany them, and the gods of the gods will follow them, opening up the prosperous era of the dynasty!

“Your Majesty, it’s time for the morning.”

“Wait, I’ll sign one first…”

- Description from novelbuddy