Yan Chengzhi, an old collector, accidentally activated the ancestral "stamp time stamp" and was able to send letters to the old time for learning. From learning to spin in the 1950s to repairing radios in the 1970s, he was obsessed with the convenience of lost skills, but was pursued by the mysterious "postman ghost" for the time postage called "skill inheritance degree" - if you learn without teaching, the postage will double! Yan Lao, who went against the grain, resolutely opened a "Light Picking Workshop" and taught the old skills he learned on a whim to the confused young people. When the spindle turned and the radio wave sounded again, the ghost's account book turned into a gold-gilded inheritance certificate. Yan Chengzhi had an epiphany: The pulse of culture can only beat forever in the palms passed down from generation to generation.
