He graduated in 1936 and stayed as a teaching assistant in Ren Qinghua Music Room. After the outbreak of the Anti-Japanese War in 1937, he was unable to move south with the school because of his old mother. During this period in Tianjin, he carried out a wide range of music activities, and founded music education institutions such as Music Specialized College, YMCA Music Specialized Section and Music Society. He first formed and directed the Orchestra of Tianjin Institute of Technology, Tianjin Yuehua Middle School Choir and YMCA Choir. He brought together a large number of musicians, engaged in artistic activities and cultivated new artists, and expressed patriotic feelings by playing classical masterpieces and infiltrating new works of justice and resistance, resisting the enemy and puppet culture. He conducted and performed symphonies, orchestral works and large-scale vocal works by famous composers at home and abroad, including Handel's Messiah, such as Bach, Haydn, Mozart, Beethoven, Schubert, Mendelssohn, Liszt, Wagner, Verdi, Bicai and Huang Zi. At the same time, he created and performed his own works, such as the symphonic poem Su Wu, the opera Mulan Joining the Army, the storm of pines and plums, and the divine chorus A Christmas Song, to show his unyielding national integrity. The symphonic poem "Su Wu" premiered in Tianjin under the direction of the composer. The audience listened with tears and wrote to the author one after another, expressing that after listening to the symphonic poem "Su Wu", "patriotism arises spontaneously". In his book Music Culture in China, the Soviet music theorist Schnieyunson spoke highly of this work, saying that the author combined the skilled European Romantic composition skills with the theme tones of China folk songs, and the "Hu People Dance" in the music was comparable to the musical image of Bolowitz Dance (Tatar Dance) in Baudin's Igoria. Because of these achievements, he was awarded the title of professor by the School of Business and Technology at the age of 27, and was praised as "the hero of Tianjin music" by the Chinese and foreign newspapers in Tianjin at that time. His command language is accurate and refined, and his style is unpretentious. He is highly praised by Chinese and foreign conductors, performers and audiences, and he is an early outstanding conductor in northern China. After the victory of the Anti-Japanese War, he returned to Tsinghua as a music room tutor, formed a folk band, an orchestra and a military band, and concurrently served as the conductor of the yenching university Orchestra.