Introduction to East and West Fortress Mountains: East and West Fortress Mountains were originally brothers and sisters who had been in love for hundreds of years. Now, the embankment is completed, which seems to separate the two brothers and sisters. In fact, in the sky, birds are coming from the West Mountains. Flying to Dongshan, the flowing water keeps carrying endless words from Dongshan to Xishan. Underneath this river, the two mountains are connected with each other, and their qi and blood are connected.