The End of the World: Infinite Advancement, I Can Strengthen All Things!

[The end of the world + super powers + upgrade flow + fast pace + multiple women] Zhang Zhixing accidentally traveled to a parallel world and encountered an apocalyptic crisis! At critical moments, the advanced strengthening system is bound, and you can use your own serum to strengthen everything! [Ding, congratulations to the host for strengthening the wooden block and upgrading it to a "small hand crossbow"] [Ding, congratulations to the host for strengthening the wooden door and upgrading it to an "isolating iron door"] [Ding, congratulations to the host for advancing the system and obtaining the "Scanning Eye!"] Through contact with people with supernatural powers, You can also upgrade the system and get unlimited advancement to get more rewards! In this apocalypse, Zhang Zhixing opened up the only way to survive by strengthening all things!