From the appearance, my father’s old wall clock is plain and simple. It is about ninety centimeters high and forty centimeters wide. The movement is made of copper and is engraved with the words "Made in Germany" and a clear digital code. The shell is made of brown solid wood with meticulous workmanship. The bell crown is decorated with simple wood carving patterns, and the edge of the bell door is engraved with exquisite patterns. The dial is made of brass and is equipped with three hands. There is a small hole for winding on each side of the center of the dial, the size of a date stone. The pendulum is also made of copper and operates stably. In Li Jings memory, every half month, her father would move a wooden stool and stand on it, open the glass door of the wall clock, take out the key from the clock base - a small iron pipe with flat ears, insert two string eyes, and turn the winding clockwork "click, click". After being wound up, the wall clock can run continuously for fifteen days and the timekeeping is quite reliable. The sound of "tick-tock, tick-tock" echoed in the old house. The time was struck every half hour, and the bell sounded melodiously and loudly. The ticking and time-telling sounds are like a gentle lullaby, allowing the whole family to fall asleep peacefully to the melody every night. Time flies, almost fifty years have passed, and family life has undergone tremendous changes. Many people have ditched their old wall clocks and replaced them with modern quartz clocks. But my father was still reluctant to take this old wall clock off the wall. It is like an old friend who has been with you for many years, witnessing the passage of time of Li Jingsi and her father's family, listening to their joys and sorrows, and always responding piously: "Tick tock, tick tock, tick tock, there will be people who will care about you..."