A clip from Isaac Stern’s three-week cultural visit to China in June 1979 is shown here in the documentary, From Mao to Mozart. A Wikipedia entry on this trip and subsequent documentary, which won an Academy Award for Best Documentary Feature (1980), gives the following basic information:
From Mao to Mozart: Isaac Stern in China is a 1980 documentary film about Western culture breaking into China produced and directed by Murray Lerner. It portrays the famous violinist and music teacher Isaac Stern as the first American musician to collaborate with the China Central Symphony Society (Now China National Symphony Orchestra). The film documented Mr. Stern's rehearsals and performances of Mozart and Brahms violin concertos with the famous Chinese conductor Li Delun, who also acted as his guide and translator on his trip. The film also included footage of Mr. Stern's visit to the Central Conservatory of Music and Shanghai Conservatory of Music where he lectured to the Chinese music students on violin playing and the art of musical expression.
From Mao To Mozart: Isaac Stern in China