Gearbox from a Previous Life

He is a watchmaker and has repaired tens of thousands of watches in his life, but he can accurately adjust every second. His wife laughed at him for being "serious", and he said: "The time cannot be wrong. If it is wrong by one second, people may miss it." After his wife left, he set all the clocks in the house to the same time, and every second was accurate. The daughter said: "Mom is not here anymore, why is the tune so accurate?" He did not answer. Until his death, when his daughter was sorting out his belongings, she found a note under his pillow: "I adjusted every second because I was afraid that she wouldn't know what time it was when she came back." The daughter looked up at the clock on the wall, and everything stopped at the moment her mother left.