I Sell Immortality in Another World

"Hello! You have 23 minutes left." "I am Lin Feng, a traveling merchant. I sell time and life span." "Excuse me, do you want to extend the time?" "Yes, yes, of course!" "Then please pay 1 billion!" "Okay, okay, the price is really fair!" Ding! 1 Billion has been credited to your account. Bite! Congratulations to the host for serving special customers and rewarding the travel merchant base! Bite! Congratulations to the host for gaining the power of teleportation! Bite! Congratulations to the host for obtaining enhanced skill points! With this supreme system. The first thing Lin Feng has to do is: Revenge! Avenge the family's destruction! Take away the enemy's lifespan and make him feel hellish pain and sadness. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.