Train Survival: I Rely on Killing Tricks to Infinitely Upgrade Supplies

[Train Survival + Strange + Extraordinary Sequence + System + Upgrade + Collecting Materials] Strange invasion, the end of the world is coming! Only the train cannot be attacked! A second ago, Chen Nan had just picked up a reagent that could awaken the extraordinary sequence. The next second, he was accidentally pulled into the safe train and got a "permanent ticket" at the beginning! With your ticket in hand, you won't have to worry about anything! Even the train policemen extended an olive branch to him! As a result, Chen Nan easily got the status of "temporary worker". Next… While other passengers are still worried about losing their lives if they break the rules, Chen Nan is used to breaking the rules! He even started working as a part-time contractor? Passenger: "I'm going to starve to death. Please ask Mr. Chen for some food..." Chen Nan: "Want a meal ticket for the dining car? OK, you go and clean the toilet in the carriage." Passenger: "The weird things at the next station are too fierce. Please ask Mr. Chen to sell me another strange thing!" Chen Nan: "No problem, but that's another price..." … All passengers are curious, where did Chen Nan's supplies come from? But no one knows that he has awakened a super powerful "system" with extraordinary sequence! By accumulating energy points, not only can you use various sequences of abilities in turn, but you can also infinitely upgrade various materials... Wow, isn't that an easy life? No no no! Charging to kill monsters is a laborious task! Besides, Chen Nan only has an ordinary kitchen knife in his hand! Kill the trick? Only a fool would kill Gui! Must run! Until—— After the "egg" he threw into space broke its shell, Chen Nan completely became the strange man he was most afraid of meeting! From now on, killing monsters is just like playing! … [The station is coming soon, please be prepared] Get off——