Who can tell me the origin of Liu Gongdao in Weihai?

This is the comment that the head teacher gave me when our class traveled to Liu Gongdao!

Now, let's go back to the original topic and talk about Liu Gongdao's name. Every place name has its origin, and so does Liu Gongdao. According to experts' research, as early as the Warring States period, people named "Liujia Island" lived on the island. According to legend, at the end of the Eastern Han Dynasty, a Liu family fled to this island to avoid the persecution of Cao Shi's descendants. After coming here, I found the island is surrounded by mountains and seas, and the scenery is beautiful, so I decided to settle here and named it after my surname Liu, namely the island. Then why was it later renamed "Liu Gongdao"? About 400 years ago, a southern merchant fleet went out to sea to fish, and encountered strong winds and waves on the way. These people prayed for the blessing of Poseidon and struggled with the waves, but they all failed. Just when they were unable to save themselves and gave up their hope of survival, they suddenly found a fire flashing on the sea ahead. At this time, they jumped up with cheers and ran to the fire with all their strength, only to find that the fire came from a thatched cottage on an isolated island. They docked the boat at the dock by the dim light. Because they struggled with the bad waves in the sea and consumed too much physical strength, they fainted on the ground as soon as they set foot on the beach. When they woke up, they found that they were saved by two enthusiastic old people. The old people brought them steaming ginger soup and tortillas, but strangely, they couldn't finish all these meals. Did they meet a fairy when they were eating? Are their prayers useful? So I asked two old people what their names were, and the old people told them their names were Gong Liu and Liu Mu. When they were full, the old man arranged a rest place for them, and then turned away. The next morning, it was sunny and the sea was calm. This is a good day to go to sea. They wanted to thank the old man in person for saving his life before leaving, but they searched all over the island and found no one, so they bowed down on the beach and left again and again. Later, all the ships wrecked at sea will get help and guidance from the old man. In order to thank the old man for his kindness, people built a Liugong Temple on this island. In a long time, this island will be called Liu Gongdao.