Where did the name of the old longan in Chunshan, Huainan come from?

The origin of "Old Longan" is mainly because this place was under Shungeng Mountain a long time ago, and a spring water gushed out all the year round. People nearby use this spring as their water source. There are huge stones around the spring that look like dragons, so it is named "Longan". Over time, it has evolved into an "old longan". After liberation, this spring is still spewing, with a large amount of water. Later, it was considered to be buried for historical reasons, forming the Old Longyan Reservoir. The real spring is still there, in the courtyard of the General Hospital of Dongfang Hospital Group.