Plot: In episode 4 of the program, not only Lushan City in Jiangxi Province and Tiantai County in Zhejiang Province, two places named after "Mountains", were invited to perform on-site, as well as medical aid teams from Qilu Hospital of Shandong University and West China Hospital of Sichuan University. The team members will meet again in the program, and the traveler will also cross mountains and rivers and tell about the beautiful China