1950年8月,科学院語言研究所派我參加中央人民政府西北各民族訪問團,要我除在團的領導下,按照訪問團總方針,为中央的民族政策作一具体表現,以增强各族相互间的感情信賴外,同時對於西北各兄弟民族語言的分佈情况,做一些調查記音的工作。為便利工作起见,所里为我準備了一架鋼絲錄音机和一具變流變壓器。 In August 1950, the Institute of Languages ​​of the Academy sent me to participate in the delegation of the northwest peoples of the Central People’s Government. In addition to the general guidance of the delegation, I asked the delegation to give a concrete demonstration of the ethnic policy of the Central Government in order to enhance the unity of all ethnic groups Trust each other outside the trust, at the same time for the distribution of the various ethnic languages ​​in the northwest, to do some research notes tone work. For the sake of convenience, a steel tape recorder and a converter transformer were prepared for me.