There are many caves in China, especially in Guangxi, but everyone knows that limestone mines and water-rich places are easy to form caves. Here you can bring a cave that you can't think of in the northeast China's first long dark river. In the cave, the stalactites of the stalactites are tens of thousands of thousands of miles, and the light boat is surrounded by poetry and paintings; the clock show is only in the fairy world, and the world is unique. This poem is full of the wonderful scenery of this stream, the world's first longest boat to visit the underground dark river, come to Benxi must experience once oh [seduce] winter tour Benxi is satisfied Oh