What is the main theme of 'Once Upon a Time in Shanghai Novel'?

In the year 4223, the Spirit Sword Sect was established in the Nine Regions. For thousands of years, it has always been committed to producing first class talented immortal cultivators. Nowadays, it is among the five great sects within the Union of Ten Thousand Immortals. The sect leader, Daoist Master Feng Yin, is one of the seven great elders of the Union Of Ten Thousand Immortals; his cultivation shocked the world. Spirit Sword Sect adhered to subjects of peace and development. The sect’s core values are seeking the truth, seeking the good, and seeking the loyalty. To further expand the power of the sect and to add fresh blood, all elites and geniuses are invited to attend the Immortal Gathering. ------ Release Rate: 5 Chapters/Week; will be released on Mon, Wed, Fri and Weekend;

English is not my first language so please take care of me and if you find mistakes in it tell me I fix it as soon as possible. Max Winchester died due to an "accident" while reading the novel after his death he meet God who allowed him to travel through and do whatever he think best but on condition to make Protagonist's life miserable. He also gives him the strongest system [Netori system] that help him steal Protagonists Woman, Chances, Luck, etc Why does God want to make that Protagonist's life miserable? And why [Netori system] given to the max let's find out. (English will get better after chapter 38.) I don't own a book cover, I find it online, If creator wants me to change it just message me, I will remove it.

Before there ever was a boy that ever lived in a cupboard on Four Privet Drive, there was a similar boy in a far worse home that lived on Spinner’s End. We all know the tale of that abused boy who grew up to become a bitter spy. But not all tales end the same for in the many parallel worlds that exist in the universe there are far better endings, and equally as many worse ones. This is a tale of one such condemned universe that for better or for worse chooses to change its own fate at through the sacrifice of the bitter spy. (All rights to the Harry Potter world and characters belong solely to J. K. Rowling. However, I do claim creative fanfiction rights. Please do not post my fanfiction elsewhere without my express permission. This work will also be partially hosted at RoyalRoad, Wattpadd, and Archive.)

Li Jing transmigrated in the xianxia web novel he was reading before his death. Unfortunately for him, he didn’t become the main character. With the help of his knowledge of the web novel and a system gifted by a mysterious god, will he be able to surpass the main character and reach the apex?

Will appear in another novel with the same name within the next month or so as I properly rework it. Curse my inability to leave things unfinished.

Nothing more than an ATG fanfiction.