Happy Clock has a short pendulum. It makes you feel your happy moment short. On the contrary, unhappy Clock has a long pendulum. In this way, you feel any second in your unhappy time like an hour.
快樂的鐘有個短鐘擺,因此你的快樂時光總是過得飛快。
相反的,不快樂的鐘有個長擺鎚,讓你感覺度日如年。
(Another do it for fun work!)