In the morning, at the altitude of more than 900 meters above sea level, you can feel the negative oxygen ion bursting in the Mengshan sea, and the dew on the green leaves is crystal clear. It is reported that in 1999, 1 the Ecological Research Center of the Chinese Academy of Sciences monitored that the negative ion content in the air in the scenic area was 854,167 per cubic centimeter, 195 times that of the Beijing area, ranking first in the country, the highest value ever measured by the center, so Mengshan Known as "natural oxygen bar", "super clean area". The forest plank road is made of red pine logs. The entire plank road runs through the three routes of South Mountain Road, Middle Road and North Road. It is a shortcut for visitors to watch the scenery of Mengshan Mountain. Among them, there is a forest assault car, which can quickly reach our starting point today. That is, the Mengshan Hall. The drizzle of the patter, the falling piebald of the piece, what kind of picture is left in your heart?