Chen thought he was hallucinating then a message popped on system to kill 10 mice for beginners martial art fire palm technique and 100 million won Chen thought there was no harm in doing this because he recently joined a rat extermination buisness after 2 days Chen finally killed 10 mice then suddenly a voice said congratulations on completing the quest rewards will be given shortly then Chen looked at his phone there was a notification on his phone from his bank 100,000,000 has been transferred to your account ending with xxxxxx6937 from account ending with xxxxxx5284 at 5:46 pm 12/5/2020 and then Chen saw a book floating when he touched it an option came learn when he was about to click it his boss started shouting for them to get back at work so he decided to learn it at home later