Li Du knew that it was useless ringing the doorbell, and he also had a hunch that his door-to-door communication might be useless. The music was so loud that no one could hear the doorbell. Choosing to play such harsh music showed that they had no intention of getting along with their neighbors anyway.
He had expected it, but he still had to show some attitude. Li Du, an intellectual who had been trained in etiquette and Confucianism, felt that the best way to solve problems was to first show respect, and then use violence when respect did not work.
Sure enough, he pressed the doorbell several times and no one came out of the villa.
Like the house they lived in, the villa had a fence, not high, with a loop of wire wrapped around it, apparently protected by an electric grid.