Gu Su is a very independent person and he never likes to trouble others. If he hadn't made an appointment with his classmates to go to a concert on May Day, but was told that the subway line to the school closed at ten o'clock, he probably would never have contacted his fellow students who also work in Beijing.
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Well, if Gu Su had known that this fellow's roommate was a crook and that he had some... Meaning towards him, he wouldn't have sent him to his door stupidly and lost his heart in the end.
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A college student who is simply afraid of trouble and doesn't like tangles + a worker who deliberately forces the little sheep to jump into the trap = a simple but not simple love