Single mother Fang Qing discovered that her electricity bill had doubled for no apparent reason. She found out that her neighbor Wang Hai had been secretly using her own external socket to charge her electric car for a long time. Faced with the other party's arrogance, she did not confront her on the spot. Instead, she made a precise layout and replaced her main fuse with an 8A delay type. She used the peak charging current of the electric vehicle to repeatedly impact the battery, eventually causing her neighbor's electric vehicle to spontaneously ignite. Wang Hai came to the door in a rage and committed violence. Fang Qing calmly called the police and took the legal initiative with complete evidence of electricity theft. Later, he collected evidence of defamation and harassment from the other party and anonymously reported it to his company, completing a step-by-step revenge.