Debris from the low-yield nuclear tests performed by the People's Republic of China on November 18, 1971 and on January 7, 1972 has beend collected in Sweden and examined by gamma spectroscopy and reversal autoradiographic methods. In November very low amounts of debris were detected at ground level and nothing at all at high altitudes. In spite of the low yield of the tests, the ratio of (n,gamma) to (n, 2n) reactions in 238U indicates a theromonyclear explosion. No "hot" particles were found and the thus implied "opposite" fractionation was verified. In January the debris was typical of an atmospheric all fission explosion. A total of 82 "hot" particles were found ande these were divided into three size classes for fractionation studies. The average specific beta-activity of the "hot" particles was determined to 0.035 Bq/um3 at 100 days (2.1 dpm/um3 at 100 days).