What is the meaning of lucky money?

According to legend, in ancient times, there was a monster called Chong who came out on New Year's Eve and sneaked into people's homes to touch the head of a sleeping child. Any child who is moved by "worship" will have a headache and fever and eventually become a fool. As a result, every household stayed up for 30 nights with the lights on, "keeping it special". Make a phone call

There is an old couple who come to their children when they are old. They regard it as a treasure, and they are afraid that they will "treasure" their children for 30 nights, so they take out eight copper coins to play with them. When the children were tired of playing, they put them on pillows to sleep. In the middle of the night, after a gust of evil wind, "Chong" sneaked into the old couple's house, blew out the candles and reached for the child's head. As a result, generate suddenly flashed eight lights on the pillow, which scared him out of the door! The story spread like wildfire. People think that these eight copper coins are the embodiment of the Eight Immortals to protect their children. Because "old" and "old" are homophonic, people later called "longevity" and gave children some copper coins on New Year's Eve to pray for peace.