Introduction to the Gangtu Guigen Monument: On the east side of the Sanzu Hall, there is the "Gangtu Guigen Monument" and three Guigen pines. On the eve of Hong Kong's return to the motherland in 1997, three young people from Jilin Province, full of patriotic enthusiasm, traveled all the way to Hong Kong to collect soil. On the east side of the Sanzu Hall, they used the soil they collected from Hong Kong to plant three return pine trees. In front of the pine tree stands a 1997 cm high granite "Hong Kong Tu Gui Gen Monument". Now, the three lush pine trees and the Sanzu Hall have become symbols of the unity of the Chinese nation.