If you think there are some plot issues after those 600 chapters, give it another 500 to realize that this novel is one single entity of a large overarching story and some things that seems "lucky" or "convenient" might not be so simple

The Magic system is probably my favorite part of this novel.

Every Immortal is essentially a walking financial portfolio.

Every Immortal produces a fixed amount of mana per day, usually a very low number.

Every attack an Immortal makes costs mana, usually much higher than anything he could acquire in months.

Every battle matters in the story because one extra exchange of blows might have irreversible financial consequences for the characters and often does.

This is magnified by the fact that you as an Immortal need thousands of GU to form a single attack and many of them tend to die in the process.

This is also magnified by the fact that you need Several such moves and you also need to continuously feed these millions of Gu living inside of your Personal World.

This is also magnified by the fact that your world aside from being developed to feed these GU by growing plants, raising animals or creating environments also needs a fair amount of investment in Immortal materials to Raise its quality because that is also a multiplier when executing your attacks

This is also magnified by the biggest factor of them all Immortal Tribulation.

In this novel Immortal tribulation comes continuously and tries to destroy your inner world, it is not easy to deal against and remember not only is every attack or defense you make costing you money you do not have, but also the Tribulation is actively destroying everything you worked hard on building up and acquiring.

This results in most immortals being dead-ass broke, resulting in everyone being greedy, selfish and diabolically self-serving when they think no one is looking.

Most Gu Immortal die from Immortal Tribulation because they cannot afford to fight it as time goes by.

To solve this issue Immortals turn their mana into currency and trade with it for things like GU, GU Food, Materials to refine Gu, Recipies, Information and many other things, creating a large global market.
Eventually, competent immortals develop their world in a certain way that can make them money/mana.

Either by specializing in producing food for certain GU types, acquiring materials in dangerous locations, or being a part of the service-based economy of making gu, doing certain tasks they specialize in etc.

Most Immortal are part of factions because of this, they need to be a part of a larger organization to properly utilize and distribute labor to create an effective profit-producing conglomerate.

Remember how I said every Immortal is essentially a walking financial portfolio?

In this world Economic development is strength and it is honestly a refreshing to see when you compare it to someone fighting for 30 days and then just meditating for a few hours to recover and be good to go.

I won't go too into this because it's tough to do without spoilers.

The world is extremely fleshed out and acts like how you would imagine a world being with the above-mentioned magic system. People form sects or factions to stabilize economically, but in term, every single one of them will stab anyone in the back if presented with an opportunity just so they can acquire their wealth.

Because Wealth =power and Wealth= you surviving another Immortal tribulation.

There is an overarching plot happening that has been developing for millions of years and you follow Fang Yuan and how he gradually discovers it and how he is a part of it.

the greatest human path inheritance, and in my opinion, including the readers