It didn't work. Feng Shui believes that mountains are in charge of people and water is in charge of wealth. In other words, Wang Ding, a mountain man, has water and financial resources; Fire hydrants are water switches, and water is money. Turn on the switch, water rolls in, which means money rolls in. Therefore, fire hydrants are auspicious mascots, which have no effect on feng shui, but are beneficial.
Academic research is for reference only, so don't be superstitious. Good luck!