Why can't Feng Shui celebrate the New Year with the word T?

The Spring Festival is the beginning of the New Year. Everyone hopes that financial resources will keep rolling, good luck will continue, career development and happy events will continue, and we will create greater glories, by going up one flight of stairs. And the word "T" has a horizontal top and a vertical bottom (which can be gestured by hand) to indicate stop and impassability. Because of its unlucky meaning, it was "stopped" by people in some places.