Yang Lixin invited his girlfriend to dinner. Mineral water 20 yuan is too expensive. What are two glasses of tap water?

Yang Lixin invited his girlfriend to dinner. The mineral water of 20 yuan was too expensive, so he ordered two cups of tap water. Half a Floor is a TV play starring Yang Lixin, a famous actor in China. Adapted from Wang Shuo's original novel Half a Building, the play mainly tells a series of stories in Shanghai's old-fashioned alleys, presenting the life scenes in Shanghai in the 1980s and people's emotional entanglements. Yang Lixin is a well-known actor in China, with rich performance experience, and has outstanding performance in TV series, movies and stage plays.