Lake of the Returned Sword, Lake of the Restored Sword, Hoan Kiem Lake is a fresh water lake and a famous park in the center of Hanoi, Vietnam. Lake City Center, Hanoi This lake has a legend. During the war against Vietnam. The King of Vietnam has been war for a long time. I can not beat Chinese soldiers at all. Cause discouragement. When you come to this lake. There was a large tortoise with a wonderful sword. To do battle with china After he received the sword. He returned to war again. And win over China. Leave a comment When the war is over. He brought the sword back at this lake and led him across the solar bridge. Bright red lake in the middle of the night.