The vanity cannot be seen, that is its value

Mr. Xu, the ceramic tile maker mentioned that none of the tile needed to be sliced in Tiptop since every tile in the building was expected to be maintained as a piece, hence made his job easy.

Mr. Xue, the plumber mentioned that the installation of toiletry fixture was compulsory to be aligned with every tile in Tiptop, hence made his job difficult.

Mr. Zhu, the electrician mentioned that he had never done wrong all these years in fixing door switches, however, he was asked to re-do since Tiptop expected all switches to be in line with the door latch.