Introduction to the Mengshan Red Army Memorial Hall: The Mengshan Red Army Memorial Hall, also known as the Red Army Baizhangguan Battle Memorial Hall, is located next to Yunu Peak, on the top of Mengding Mountain, and above the Imperial Tea Garden. It turned out to be the former site of Tianzhu Academy in Mengding Mountain and the headquarters of the Red Army’s Baizhang Pass Battle. The memorial hall was built in 1985 and covers an area of 521 square meters.